Issue #1751 -- Remove cocoa support code from /dom

23 files changed, 1 insertions, 2293 deletions

diff --git a/dom/gamepad/cocoa/CocoaGamepad.cpp b/dom/gamepad/cocoa/CocoaGamepad.cpp
deleted file mode 100644
index eb6eda9a17..0000000000
--- a/dom/gamepad/cocoa/CocoaGamepad.cpp
+++ /dev/null
@@ -1,590 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-// mostly derived from the Allegro source code at:
-// http://alleg.svn.sourceforge.net/viewvc/alleg/allegro/branches/4.9/src/macosx/hidjoy.m?revision=13760&view=markup
-
-#include "mozilla/dom/Gamepad.h"
-#include "mozilla/dom/GamepadPlatformService.h"
-#include "mozilla/ArrayUtils.h"
-#include "mozilla/Unused.h"
-#include "nsThreadUtils.h"
-#include <CoreFoundation/CoreFoundation.h>
-#include <IOKit/hid/IOHIDBase.h>
-#include <IOKit/hid/IOHIDKeys.h>
-#include <IOKit/hid/IOHIDManager.h>
-
-#include <stdio.h>
-#include <vector>
-
-namespace {
-
-using namespace mozilla;
-using namespace mozilla::dom;
-using std::vector;
-
-struct Button {
-  int id;
-  bool analog;
-  IOHIDElementRef element;
-  CFIndex min;
-  CFIndex max;
-
-  Button(int aId, IOHIDElementRef aElement, CFIndex aMin, CFIndex aMax) :
-    id(aId),
-    analog((aMax - aMin) > 1),
-    element(aElement),
-    min(aMin),
-    max(aMax) {}
-};
-
-struct Axis {
-  int id;
-  IOHIDElementRef element;
-  uint32_t usagePage;
-  uint32_t usage;
-  CFIndex min;
-  CFIndex max;
-};
-
-typedef bool dpad_buttons[4];
-
-// These values can be found in the USB HID Usage Tables:
-// http://www.usb.org/developers/hidpage
-const unsigned kDesktopUsagePage = 0x01;
-const unsigned kSimUsagePage = 0x02;
-const unsigned kAcceleratorUsage = 0xC4;
-const unsigned kBrakeUsage = 0xC5;
-const unsigned kJoystickUsage = 0x04;
-const unsigned kGamepadUsage = 0x05;
-const unsigned kAxisUsageMin = 0x30;
-const unsigned kAxisUsageMax = 0x35;
-const unsigned kDpadUsage = 0x39;
-const unsigned kButtonUsagePage = 0x09;
-const unsigned kConsumerPage = 0x0C;
-const unsigned kHomeUsage = 0x223;
-const unsigned kBackUsage = 0x224;
-
-
-class Gamepad {
- private:
-  IOHIDDeviceRef mDevice;
-  nsTArray<Button> buttons;
-  nsTArray<Axis> axes;
-  IOHIDElementRef mDpad;
-  dpad_buttons mDpadState;
-
- public:
-  Gamepad() : mDevice(nullptr), mDpad(nullptr), mSuperIndex(-1) {}
-  bool operator==(IOHIDDeviceRef device) const { return mDevice == device; }
-  bool empty() const { return mDevice == nullptr; }
-  void clear()
-  {
-    mDevice = nullptr;
-    buttons.Clear();
-    axes.Clear();
-    mDpad = nullptr;
-    mSuperIndex = -1;
-  }
-  void init(IOHIDDeviceRef device);
-  size_t numButtons() { return buttons.Length() + (mDpad ? 4 : 0); }
-  size_t numAxes() { return axes.Length(); }
-
-  // Index given by our superclass.
-  uint32_t mSuperIndex;
-
-  bool isDpad(IOHIDElementRef element) const
-  {
-    return element == mDpad;
-  }
-
-  const dpad_buttons& getDpadState() const
-  {
-    return mDpadState;
-  }
-
-  void setDpadState(const dpad_buttons& dpadState)
-  {
-    for (unsigned i = 0; i < ArrayLength(mDpadState); i++) {
-      mDpadState[i] = dpadState[i];
-    }
-  }
-
-  const Button* lookupButton(IOHIDElementRef element) const
-  {
-    for (unsigned i = 0; i < buttons.Length(); i++) {
-      if (buttons[i].element == element)
-        return &buttons[i];
-    }
-    return nullptr;
-  }
-
-  const Axis* lookupAxis(IOHIDElementRef element) const
-  {
-    for (unsigned i = 0; i < axes.Length(); i++) {
-      if (axes[i].element == element)
-        return &axes[i];
-    }
-    return nullptr;
-  }
-};
-
-class AxisComparator {
-public:
-  bool Equals(const Axis& a1, const Axis& a2) const
-  {
-    return a1.usagePage == a2.usagePage && a1.usage == a2.usage;
-  }
-  bool LessThan(const Axis& a1, const Axis& a2) const
-  {
-    if (a1.usagePage == a2.usagePage) {
-      return a1.usage < a2.usage;
-    }
-    return a1.usagePage < a2.usagePage;
-  }
-};
-
-void Gamepad::init(IOHIDDeviceRef device)
-{
-  clear();
-  mDevice = device;
-
-  CFArrayRef elements = IOHIDDeviceCopyMatchingElements(device,
-                                                        nullptr,
-                                                        kIOHIDOptionsTypeNone);
-  CFIndex n = CFArrayGetCount(elements);
-  for (CFIndex i = 0; i < n; i++) {
-    IOHIDElementRef element = (IOHIDElementRef)CFArrayGetValueAtIndex(elements,
-                                                                      i);
-    uint32_t usagePage = IOHIDElementGetUsagePage(element);
-    uint32_t usage = IOHIDElementGetUsage(element);
-
-    if (usagePage == kDesktopUsagePage &&
-        usage >= kAxisUsageMin &&
-        usage <= kAxisUsageMax)
-    {
-      Axis axis = { int(axes.Length()),
-                    element,
-                    usagePage,
-                    usage,
-                    IOHIDElementGetLogicalMin(element),
-                    IOHIDElementGetLogicalMax(element) };
-      axes.AppendElement(axis);
-    } else if (usagePage == kDesktopUsagePage && usage == kDpadUsage &&
-               // Don't know how to handle d-pads that return weird values.
-               IOHIDElementGetLogicalMax(element) - IOHIDElementGetLogicalMin(element) == 7) {
-      mDpad = element;
-    } else if ((usagePage == kSimUsagePage &&
-                 (usage == kAcceleratorUsage ||
-                  usage == kBrakeUsage)) ||
-               (usagePage == kButtonUsagePage) ||
-               (usagePage == kConsumerPage &&
-                 (usage == kHomeUsage ||
-                  usage == kBackUsage))) {
-      Button button(int(buttons.Length()), element, IOHIDElementGetLogicalMin(element), IOHIDElementGetLogicalMax(element));
-      buttons.AppendElement(button);
-    } else {
-      //TODO: handle other usage pages
-    }
-  }
-
-  AxisComparator comparator;
-  axes.Sort(comparator);
-  for (unsigned i = 0; i < axes.Length(); i++) {
-    axes[i].id = i;
-  }
-}
-
-class DarwinGamepadService {
- private:
-  IOHIDManagerRef mManager;
-  vector<Gamepad> mGamepads;
-
-  //Workaround to support running in background thread
-  CFRunLoopRef mMonitorRunLoop;
-  nsCOMPtr<nsIThread> mMonitorThread;
-
-  static void DeviceAddedCallback(void* data, IOReturn result,
-                                  void* sender, IOHIDDeviceRef device);
-  static void DeviceRemovedCallback(void* data, IOReturn result,
-                                    void* sender, IOHIDDeviceRef device);
-  static void InputValueChangedCallback(void* data, IOReturn result,
-                                        void* sender, IOHIDValueRef newValue);
-
-  void DeviceAdded(IOHIDDeviceRef device);
-  void DeviceRemoved(IOHIDDeviceRef device);
-  void InputValueChanged(IOHIDValueRef value);
-  void StartupInternal();
-
- public:
-  DarwinGamepadService();
-  ~DarwinGamepadService();
-  void Startup();
-  void Shutdown();
-  friend class DarwinGamepadServiceStartupRunnable;
-};
-
-class DarwinGamepadServiceStartupRunnable final : public Runnable
-{
- private:
-  ~DarwinGamepadServiceStartupRunnable() {}
-  // This Runnable schedules startup of DarwinGamepadService
-  // in a new thread, pointer to DarwinGamepadService is only
-  // used by this Runnable within its thread.
-  DarwinGamepadService MOZ_NON_OWNING_REF *mService;
- public:
-  explicit DarwinGamepadServiceStartupRunnable(DarwinGamepadService *service)
-             : mService(service) {}
-  NS_IMETHOD Run() override
-  {
-    MOZ_ASSERT(mService);
-    mService->StartupInternal();
-    return NS_OK;
-  }
-};
-
-void
-DarwinGamepadService::DeviceAdded(IOHIDDeviceRef device)
-{
-  RefPtr<GamepadPlatformService> service =
-    GamepadPlatformService::GetParentService();
-  if (!service) {
-    return;
-  }
-
-  size_t slot = size_t(-1);
-  for (size_t i = 0; i < mGamepads.size(); i++) {
-    if (mGamepads[i] == device)
-      return;
-    if (slot == size_t(-1) && mGamepads[i].empty())
-      slot = i;
-  }
-
-  if (slot == size_t(-1)) {
-    slot = mGamepads.size();
-    mGamepads.push_back(Gamepad());
-  }
-  mGamepads[slot].init(device);
-
-  // Gather some identifying information
-  CFNumberRef vendorIdRef =
-    (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDVendorIDKey));
-  CFNumberRef productIdRef =
-    (CFNumberRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductIDKey));
-  CFStringRef productRef =
-    (CFStringRef)IOHIDDeviceGetProperty(device, CFSTR(kIOHIDProductKey));
-  int vendorId, productId;
-  CFNumberGetValue(vendorIdRef, kCFNumberIntType, &vendorId);
-  CFNumberGetValue(productIdRef, kCFNumberIntType, &productId);
-  char product_name[128];
-  CFStringGetCString(productRef, product_name,
-                     sizeof(product_name), kCFStringEncodingASCII);
-  char buffer[256];
-  sprintf(buffer, "%x-%x-%s", vendorId, productId, product_name);
-  uint32_t index = service->AddGamepad(buffer,
-                                       mozilla::dom::GamepadMappingType::_empty,
-                                       (int)mGamepads[slot].numButtons(),
-                                       (int)mGamepads[slot].numAxes());
-  mGamepads[slot].mSuperIndex = index;
-}
-
-void
-DarwinGamepadService::DeviceRemoved(IOHIDDeviceRef device)
-{
-  RefPtr<GamepadPlatformService> service =
-    GamepadPlatformService::GetParentService();
-  if (!service) {
-    return;
-  }
-  for (size_t i = 0; i < mGamepads.size(); i++) {
-    if (mGamepads[i] == device) {
-      service->RemoveGamepad(mGamepads[i].mSuperIndex);
-      mGamepads[i].clear();
-      return;
-    }
-  }
-}
-
-/*
- * Given a value from a d-pad (POV hat in USB HID terminology),
- * represent it as 4 buttons, one for each cardinal direction.
- */
-static void
-UnpackDpad(int dpad_value, int min, int max, dpad_buttons& buttons)
-{
-  const unsigned kUp = 0;
-  const unsigned kDown = 1;
-  const unsigned kLeft = 2;
-  const unsigned kRight = 3;
-
-  // Different controllers have different ways of representing
-  // "nothing is pressed", but they're all outside the range of values.
-  if (dpad_value < min || dpad_value > max) {
-    // Nothing is pressed.
-    return;
-  }
-
-  // Normalize value to start at 0.
-  int value = dpad_value - min;
-
-  // Value will be in the range 0-7. The value represents the
-  // position of the d-pad around a circle, with 0 being straight up,
-  // 2 being right, 4 being straight down, and 6 being left.
-  if (value < 2 || value > 6) {
-    buttons[kUp] = true;
-  }
-  if (value > 2 && value < 6) {
-    buttons[kDown] = true;
-  }
-  if (value > 4) {
-    buttons[kLeft] = true;
-  }
-  if (value > 0 && value < 4) {
-    buttons[kRight] = true;
-  }
-}
-
-void
-DarwinGamepadService::InputValueChanged(IOHIDValueRef value)
-{
-  RefPtr<GamepadPlatformService> service =
-    GamepadPlatformService::GetParentService();
-  if (!service) {
-    return;
-  }
-
-  uint32_t value_length = IOHIDValueGetLength(value);
-  if (value_length > 4) {
-    // Workaround for bizarre issue with PS3 controllers that try to return
-    // massive (30+ byte) values and crash IOHIDValueGetIntegerValue
-    return;
-  }
-  IOHIDElementRef element = IOHIDValueGetElement(value);
-  IOHIDDeviceRef device = IOHIDElementGetDevice(element);
-
-  for (unsigned i = 0; i < mGamepads.size(); i++) {
-    Gamepad &gamepad = mGamepads[i];
-    if (gamepad == device) {
-      if (gamepad.isDpad(element)) {
-        const dpad_buttons& oldState = gamepad.getDpadState();
-        dpad_buttons newState = { false, false, false, false };
-        UnpackDpad(IOHIDValueGetIntegerValue(value),
-                   IOHIDElementGetLogicalMin(element),
-                   IOHIDElementGetLogicalMax(element),
-                   newState);
-        const int numButtons = gamepad.numButtons();
-        for (unsigned b = 0; b < ArrayLength(newState); b++) {
-          if (newState[b] != oldState[b]) {
-            service->NewButtonEvent(gamepad.mSuperIndex,
-                                    numButtons - 4 + b,
-                                    newState[b]);
-          }
-        }
-        gamepad.setDpadState(newState);
-      } else if (const Axis* axis = gamepad.lookupAxis(element)) {
-        double d = IOHIDValueGetIntegerValue(value);
-        double v = 2.0f * (d - axis->min) /
-          (double)(axis->max - axis->min) - 1.0f;
-        service->NewAxisMoveEvent(gamepad.mSuperIndex, axis->id, v);
-      } else if (const Button* button = gamepad.lookupButton(element)) {
-        int iv = IOHIDValueGetIntegerValue(value);
-        bool pressed = iv != 0;
-        double v = 0;
-        if (button->analog) {
-          double dv = iv;
-          v = (dv - button->min) / (double)(button->max - button->min);
-        } else {
-          v = pressed ? 1.0 : 0.0;
-        }
-        service->NewButtonEvent(gamepad.mSuperIndex, button->id, pressed, v);
-      }
-      return;
-    }
-  }
-}
-
-void
-DarwinGamepadService::DeviceAddedCallback(void* data, IOReturn result,
-                                         void* sender, IOHIDDeviceRef device)
-{
-  DarwinGamepadService* service = (DarwinGamepadService*)data;
-  service->DeviceAdded(device);
-}
-
-void
-DarwinGamepadService::DeviceRemovedCallback(void* data, IOReturn result,
-                                           void* sender, IOHIDDeviceRef device)
-{
-  DarwinGamepadService* service = (DarwinGamepadService*)data;
-  service->DeviceRemoved(device);
-}
-
-void
-DarwinGamepadService::InputValueChangedCallback(void* data,
-                                               IOReturn result,
-                                               void* sender,
-                                               IOHIDValueRef newValue)
-{
-  DarwinGamepadService* service = (DarwinGamepadService*)data;
-  service->InputValueChanged(newValue);
-}
-
-static CFMutableDictionaryRef
-MatchingDictionary(UInt32 inUsagePage, UInt32 inUsage)
-{
-  CFMutableDictionaryRef dict =
-    CFDictionaryCreateMutable(kCFAllocatorDefault,
-                              0,
-                              &kCFTypeDictionaryKeyCallBacks,
-                              &kCFTypeDictionaryValueCallBacks);
-  if (!dict)
-    return nullptr;
-  CFNumberRef number = CFNumberCreate(kCFAllocatorDefault,
-                                      kCFNumberIntType,
-                                      &inUsagePage);
-  if (!number) {
-    CFRelease(dict);
-    return nullptr;
-  }
-  CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsagePageKey), number);
-  CFRelease(number);
-
-  number = CFNumberCreate(kCFAllocatorDefault, kCFNumberIntType, &inUsage);
-  if (!number) {
-    CFRelease(dict);
-    return nullptr;
-  }
-  CFDictionarySetValue(dict, CFSTR(kIOHIDDeviceUsageKey), number);
-  CFRelease(number);
-
-  return dict;
-}
-
-DarwinGamepadService::DarwinGamepadService() : mManager(nullptr) {}
-
-DarwinGamepadService::~DarwinGamepadService()
-{
-  if (mManager != nullptr)
-    CFRelease(mManager);
-}
-
-void
-DarwinGamepadService::StartupInternal()
-{
-  if (mManager != nullptr)
-    return;
-
-  IOHIDManagerRef manager = IOHIDManagerCreate(kCFAllocatorDefault,
-                                               kIOHIDOptionsTypeNone);
-
-  CFMutableDictionaryRef criteria_arr[2];
-  criteria_arr[0] = MatchingDictionary(kDesktopUsagePage,
-                                       kJoystickUsage);
-  if (!criteria_arr[0]) {
-    CFRelease(manager);
-    return;
-  }
-
-  criteria_arr[1] = MatchingDictionary(kDesktopUsagePage,
-                                       kGamepadUsage);
-  if (!criteria_arr[1]) {
-    CFRelease(criteria_arr[0]);
-    CFRelease(manager);
-    return;
-  }
-
-  CFArrayRef criteria =
-    CFArrayCreate(kCFAllocatorDefault, (const void**)criteria_arr, 2, nullptr);
-  if (!criteria) {
-    CFRelease(criteria_arr[1]);
-    CFRelease(criteria_arr[0]);
-    CFRelease(manager);
-    return;
-  }
-
-  IOHIDManagerSetDeviceMatchingMultiple(manager, criteria);
-  CFRelease(criteria);
-  CFRelease(criteria_arr[1]);
-  CFRelease(criteria_arr[0]);
-
-  IOHIDManagerRegisterDeviceMatchingCallback(manager,
-                                             DeviceAddedCallback,
-                                             this);
-  IOHIDManagerRegisterDeviceRemovalCallback(manager,
-                                            DeviceRemovedCallback,
-                                            this);
-  IOHIDManagerRegisterInputValueCallback(manager,
-                                         InputValueChangedCallback,
-                                         this);
-  IOHIDManagerScheduleWithRunLoop(manager,
-                                  CFRunLoopGetCurrent(),
-                                  kCFRunLoopDefaultMode);
-  IOReturn rv = IOHIDManagerOpen(manager, kIOHIDOptionsTypeNone);
-  if (rv != kIOReturnSuccess) {
-    CFRelease(manager);
-    return;
-  }
-
-  mManager = manager;
-
-  // We held the handle of the CFRunLoop to make sure we
-  // can shut it down explicitly by CFRunLoopStop in another
-  // thread.
-  mMonitorRunLoop = CFRunLoopGetCurrent();
-
-  // CFRunLoopRun() is a blocking message loop when it's called in
-  // non-main thread so this thread cannot receive any other runnables
-  // and nsITimer timeout events after it's called.
-  CFRunLoopRun();
-}
-
-void DarwinGamepadService::Startup()
-{
-  Unused << NS_NewThread(getter_AddRefs(mMonitorThread),
-                         new DarwinGamepadServiceStartupRunnable(this));
-}
-
-void DarwinGamepadService::Shutdown()
-{
-  IOHIDManagerRef manager = (IOHIDManagerRef)mManager;
-  CFRunLoopStop(mMonitorRunLoop);
-  if (manager) {
-    IOHIDManagerClose(manager, 0);
-    CFRelease(manager);
-    mManager = nullptr;
-  }
-  mMonitorThread->Shutdown();
-}
-
-} // namespace
-
-namespace mozilla {
-namespace dom {
-
-DarwinGamepadService* gService = nullptr;
-
-void StartGamepadMonitoring()
-{
-  if (gService) {
-    return;
-  }
-
-  gService = new DarwinGamepadService();
-  gService->Startup();
-}
-
-void StopGamepadMonitoring()
-{
-  if (!gService) {
-    return;
-  }
-
-  gService->Shutdown();
-  delete gService;
-  gService = nullptr;
-}
-
-} // namespace dom
-} // namespace mozilla
diff --git a/dom/gamepad/moz.build b/dom/gamepad/moz.build
index b8e3a855b2..15205e4c83 100644
--- a/dom/gamepad/moz.build
+++ b/dom/gamepad/moz.build
@@ -48,10 +48,6 @@ if CONFIG['MOZ_GAMEPAD']:
         SOURCES += [
             'fallback/FallbackGamepad.cpp'
         ]
-    elif CONFIG['MOZ_GAMEPAD_BACKEND'] == 'cocoa':
-        SOURCES += [
-            'cocoa/CocoaGamepad.cpp'
-        ]
     elif CONFIG['MOZ_GAMEPAD_BACKEND'] == 'windows':
         SOURCES += [
             'windows/WindowsGamepad.cpp'
diff --git a/dom/geolocation/moz.build b/dom/geolocation/moz.build
index 0230875223..d8ecf1ac17 100644
--- a/dom/geolocation/moz.build
+++ b/dom/geolocation/moz.build
@@ -29,10 +29,6 @@ if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'android':
     LOCAL_INCLUDES += [
         '/dom/system/android',
     ]
-elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    LOCAL_INCLUDES += [
-        '/dom/system/mac',
-    ]
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
     LOCAL_INCLUDES += [
         '/dom/system/windows',
diff --git a/dom/media/standalone/moz.build b/dom/media/standalone/moz.build
index 7ef15adaa9..5ec7e82c20 100644
--- a/dom/media/standalone/moz.build
+++ b/dom/media/standalone/moz.build
@@ -13,9 +13,6 @@ SOURCES += [
     '../VideoSegment.cpp',
 ]
 
-if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    UNIFIED_SOURCES += ['../systemservices/OSXRunLoopSingleton.cpp']
-
 LOCAL_INCLUDES += [
     '/caps',
     '/dom/base',
diff --git a/dom/media/systemservices/OSXRunLoopSingleton.cpp b/dom/media/systemservices/OSXRunLoopSingleton.cpp
deleted file mode 100644
index 6211d5c127..0000000000
--- a/dom/media/systemservices/OSXRunLoopSingleton.cpp
+++ /dev/null
@@ -1,44 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "OSXRunLoopSingleton.h"
-#include <mozilla/StaticMutex.h>
-
-#include <AudioUnit/AudioUnit.h>
-#include <CoreAudio/AudioHardware.h>
-#include <CoreAudio/HostTime.h>
-#include <CoreFoundation/CoreFoundation.h>
-
-static bool gRunLoopSet = false;
-static mozilla::StaticMutex gMutex;
-
-void mozilla_set_coreaudio_notification_runloop_if_needed()
-{
-  mozilla::StaticMutexAutoLock lock(gMutex);
-  if (gRunLoopSet) {
-    return;
-  }
-
-  /* This is needed so that AudioUnit listeners get called on this thread, and
-   * not the main thread. If we don't do that, they are not called, or a crash
-   * occur, depending on the OSX version. */
-  AudioObjectPropertyAddress runloop_address = {
-    kAudioHardwarePropertyRunLoop,
-    kAudioObjectPropertyScopeGlobal,
-    kAudioObjectPropertyElementMaster
-  };
-
-  CFRunLoopRef run_loop = nullptr;
-
-  OSStatus r;
-  r = AudioObjectSetPropertyData(kAudioObjectSystemObject,
-                                 &runloop_address,
-                                 0, NULL, sizeof(CFRunLoopRef), &run_loop);
-  if (r != noErr) {
-    NS_WARNING("Could not make global CoreAudio notifications use their own thread.");
-  }
-
-  gRunLoopSet = true;
-}
diff --git a/dom/media/systemservices/OSXRunLoopSingleton.h b/dom/media/systemservices/OSXRunLoopSingleton.h
deleted file mode 100644
index d06365e146..0000000000
--- a/dom/media/systemservices/OSXRunLoopSingleton.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this file,
- * You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef OSXRUNLOOPSINGLETON_H_
-#define OSXRUNLOOPSINGLETON_H_
-
-#include <mozilla/Types.h>
-
-#if defined(__cplusplus)
-extern "C" {
-#endif
-
-/* This function tells CoreAudio to use its own thread for device change
- * notifications, and can be called from any thread without external
- * synchronization. */
-void MOZ_EXPORT
-mozilla_set_coreaudio_notification_runloop_if_needed();
-
-#if defined(__cplusplus)
-}
-#endif
-
-#endif // OSXRUNLOOPSINGLETON_H_
diff --git a/dom/media/systemservices/moz.build b/dom/media/systemservices/moz.build
index aa07b291a9..7d566c42ce 100644
--- a/dom/media/systemservices/moz.build
+++ b/dom/media/systemservices/moz.build
@@ -38,10 +38,6 @@ if CONFIG['OS_TARGET'] == 'Android':
         'OpenSLESProvider.cpp',
     ]
 
-if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-  SOURCES += ['OSXRunLoopSingleton.cpp']
-  EXPORTS += ['OSXRunLoopSingleton.h']
-
 if CONFIG['_MSC_VER']:
     DEFINES['__PRETTY_FUNCTION__'] = '__FUNCSIG__'
 
diff --git a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerModule.cpp b/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerModule.cpp
deleted file mode 100644
index ef69170003..0000000000
--- a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerModule.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "mozilla/ModuleUtils.h"
-#include "nsIClassInfoImpl.h"
-
-#include "OSXSpeechSynthesizerService.h"
-
-using namespace mozilla::dom;
-
-#define OSXSPEECHSYNTHESIZERSERVICE_CID \
-  {0x914e73b4, 0x6337, 0x4bef, {0x97, 0xf3, 0x4d, 0x06, 0x9e, 0x05, 0x3a, 0x12}}
-
-#define OSXSPEECHSYNTHESIZERSERVICE_CONTRACTID "@mozilla.org/synthsystem;1"
-
-// Defines OSXSpeechSynthesizerServiceConstructor
-NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(OSXSpeechSynthesizerService,
-                                         OSXSpeechSynthesizerService::GetInstanceForService)
-
-// Defines kOSXSERVICE_CID
-NS_DEFINE_NAMED_CID(OSXSPEECHSYNTHESIZERSERVICE_CID);
-
-static const mozilla::Module::CIDEntry kCIDs[] = {
-  { &kOSXSPEECHSYNTHESIZERSERVICE_CID, true, nullptr, OSXSpeechSynthesizerServiceConstructor },
-  { nullptr }
-};
-
-static const mozilla::Module::ContractIDEntry kContracts[] = {
-  { OSXSPEECHSYNTHESIZERSERVICE_CONTRACTID, &kOSXSPEECHSYNTHESIZERSERVICE_CID },
-  { nullptr }
-};
-
-static const mozilla::Module::CategoryEntry kCategories[] = {
-  { "speech-synth-started", "OSX Speech Synth", OSXSPEECHSYNTHESIZERSERVICE_CONTRACTID },
-  { nullptr }
-};
-
-static void
-UnloadOSXSpeechSynthesizerModule()
-{
-  OSXSpeechSynthesizerService::Shutdown();
-}
-
-static const mozilla::Module kModule = {
-  mozilla::Module::kVersion,
-  kCIDs,
-  kContracts,
-  kCategories,
-  nullptr,
-  nullptr,
-  UnloadOSXSpeechSynthesizerModule
-};
-
-NSMODULE_DEFN(osxsynth) = &kModule;
diff --git a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.h b/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.h
deleted file mode 100644
index ba04f0fecb..0000000000
--- a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#ifndef mozilla_dom_OsxSpeechSynthesizerService_h
-#define mozilla_dom_OsxSpeechSynthesizerService_h
-
-#include "nsISpeechService.h"
-#include "nsIObserver.h"
-#include "mozilla/StaticPtr.h"
-
-namespace mozilla {
-namespace dom {
-
-class OSXSpeechSynthesizerService final : public nsISpeechService
-                                        , public nsIObserver
-{
-public:
-  NS_DECL_THREADSAFE_ISUPPORTS
-  NS_DECL_NSISPEECHSERVICE
-  NS_DECL_NSIOBSERVER
-
-  bool Init();
-
-  static OSXSpeechSynthesizerService* GetInstance();
-  static already_AddRefed<OSXSpeechSynthesizerService> GetInstanceForService();
-  static void Shutdown();
-
-private:
-  OSXSpeechSynthesizerService();
-  virtual ~OSXSpeechSynthesizerService();
-
-  bool RegisterVoices();
-
-  bool mInitialized;
-  static mozilla::StaticRefPtr<OSXSpeechSynthesizerService> sSingleton;
-};
-
-} // namespace dom
-} // namespace mozilla
-
-#endif
diff --git a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.mm b/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.mm
deleted file mode 100644
index ec752e00f0..0000000000
--- a/dom/media/webspeech/synth/cocoa/OSXSpeechSynthesizerService.mm
+++ /dev/null
@@ -1,498 +0,0 @@
-/* -*- Mode: Objective-C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "nsISupports.h"
-#include "nsServiceManagerUtils.h"
-#include "nsObjCExceptions.h"
-#include "nsCocoaUtils.h"
-#include "nsThreadUtils.h"
-#include "mozilla/dom/nsSynthVoiceRegistry.h"
-#include "mozilla/dom/nsSpeechTask.h"
-#include "mozilla/Preferences.h"
-#include "mozilla/Assertions.h"
-#include "OSXSpeechSynthesizerService.h"
-
-#import <Cocoa/Cocoa.h>
-
-// We can escape the default delimiters ("[[" and "]]") by temporarily
-// changing the delimiters just before they appear, and changing them back
-// just after.
-#define DLIM_ESCAPE_START "[[dlim (( ))]]"
-#define DLIM_ESCAPE_END "((dlim [[ ]]))"
-
-using namespace mozilla;
-
-class SpeechTaskCallback final : public nsISpeechTaskCallback
-{
-public:
-  SpeechTaskCallback(nsISpeechTask* aTask,
-                     NSSpeechSynthesizer* aSynth,
-                     const nsTArray<size_t>& aOffsets)
-    : mTask(aTask)
-    , mSpeechSynthesizer(aSynth)
-    , mOffsets(aOffsets)
-  {
-    mStartingTime = TimeStamp::Now();
-  }
-
-  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
-  NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(SpeechTaskCallback, nsISpeechTaskCallback)
-
-  NS_DECL_NSISPEECHTASKCALLBACK
-
-  void OnWillSpeakWord(uint32_t aIndex);
-  void OnError(uint32_t aIndex);
-  void OnDidFinishSpeaking();
-
-private:
-  virtual ~SpeechTaskCallback()
-  {
-    [mSpeechSynthesizer release];
-  }
-
-  float GetTimeDurationFromStart();
-
-  nsCOMPtr<nsISpeechTask> mTask;
-  NSSpeechSynthesizer* mSpeechSynthesizer;
-  TimeStamp mStartingTime;
-  uint32_t mCurrentIndex;
-  nsTArray<size_t> mOffsets;
-};
-
-NS_IMPL_CYCLE_COLLECTION(SpeechTaskCallback, mTask);
-
-NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SpeechTaskCallback)
-  NS_INTERFACE_MAP_ENTRY(nsISpeechTaskCallback)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISpeechTaskCallback)
-NS_INTERFACE_MAP_END
-
-NS_IMPL_CYCLE_COLLECTING_ADDREF(SpeechTaskCallback)
-NS_IMPL_CYCLE_COLLECTING_RELEASE(SpeechTaskCallback)
-
-NS_IMETHODIMP
-SpeechTaskCallback::OnCancel()
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  [mSpeechSynthesizer stopSpeaking];
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-NS_IMETHODIMP
-SpeechTaskCallback::OnPause()
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  [mSpeechSynthesizer pauseSpeakingAtBoundary:NSSpeechImmediateBoundary];
-  if (!mTask) {
-    // When calling pause() on child porcess, it may not receive end event
-    // from chrome process yet.
-    return NS_ERROR_FAILURE;
-  }
-  mTask->DispatchPause(GetTimeDurationFromStart(), mCurrentIndex);
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-NS_IMETHODIMP
-SpeechTaskCallback::OnResume()
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  [mSpeechSynthesizer continueSpeaking];
-  if (!mTask) {
-    // When calling resume() on child porcess, it may not receive end event
-    // from chrome process yet.
-    return NS_ERROR_FAILURE;
-  }
-  mTask->DispatchResume(GetTimeDurationFromStart(), mCurrentIndex);
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-NS_IMETHODIMP
-SpeechTaskCallback::OnVolumeChanged(float aVolume)
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  [mSpeechSynthesizer setObject:[NSNumber numberWithFloat:aVolume]
-                    forProperty:NSSpeechVolumeProperty error:nil];
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-float
-SpeechTaskCallback::GetTimeDurationFromStart()
-{
-  TimeDuration duration = TimeStamp::Now() - mStartingTime;
-  return duration.ToMilliseconds();
-}
-
-void
-SpeechTaskCallback::OnWillSpeakWord(uint32_t aIndex)
-{
-  mCurrentIndex = aIndex < mOffsets.Length() ? mOffsets[aIndex] : mCurrentIndex;
-  if (!mTask) {
-    return;
-  }
-  mTask->DispatchBoundary(NS_LITERAL_STRING("word"),
-                          GetTimeDurationFromStart(), mCurrentIndex);
-}
-
-void
-SpeechTaskCallback::OnError(uint32_t aIndex)
-{
-  if (!mTask) {
-    return;
-  }
-  mTask->DispatchError(GetTimeDurationFromStart(), aIndex);
-}
-
-void
-SpeechTaskCallback::OnDidFinishSpeaking()
-{
-  mTask->DispatchEnd(GetTimeDurationFromStart(), mCurrentIndex);
-  // no longer needed
-  [mSpeechSynthesizer setDelegate:nil];
-  mTask = nullptr;
-}
-
-@interface SpeechDelegate : NSObject<NSSpeechSynthesizerDelegate>
-{
-@private
-  SpeechTaskCallback* mCallback;
-}
-
-  - (id)initWithCallback:(SpeechTaskCallback*)aCallback;
-@end
-
-@implementation SpeechDelegate
-- (id)initWithCallback:(SpeechTaskCallback*)aCallback
-{
-  [super init];
-  mCallback = aCallback;
-  return self;
-}
-
-- (void)speechSynthesizer:(NSSpeechSynthesizer *)aSender
-            willSpeakWord:(NSRange)aRange ofString:(NSString*)aString
-{
-  mCallback->OnWillSpeakWord(aRange.location);
-}
-
-- (void)speechSynthesizer:(NSSpeechSynthesizer *)aSender
-        didFinishSpeaking:(BOOL)aFinishedSpeaking
-{
-  mCallback->OnDidFinishSpeaking();
-}
-
-- (void)speechSynthesizer:(NSSpeechSynthesizer*)aSender
- didEncounterErrorAtIndex:(NSUInteger)aCharacterIndex
-                 ofString:(NSString*)aString
-                  message:(NSString*)aMessage
-{
-  mCallback->OnError(aCharacterIndex);
-}
-@end
-
-namespace mozilla {
-namespace dom {
-
-struct OSXVoice
-{
-  OSXVoice() : mIsDefault(false)
-  {
-  }
-
-  nsString mUri;
-  nsString mName;
-  nsString mLocale;
-  bool mIsDefault;
-};
-
-class RegisterVoicesRunnable final : public Runnable
-{
-public:
-  RegisterVoicesRunnable(OSXSpeechSynthesizerService* aSpeechService,
-                         nsTArray<OSXVoice>& aList)
-    : mSpeechService(aSpeechService)
-    , mVoices(aList)
-  {
-  }
-
-  NS_IMETHOD Run() override;
-
-private:
-  ~RegisterVoicesRunnable()
-  {
-  }
-
-  // This runnable always use sync mode.  It is unnecesarry to reference object
-  OSXSpeechSynthesizerService* mSpeechService;
-  nsTArray<OSXVoice>& mVoices;
-};
-
-NS_IMETHODIMP
-RegisterVoicesRunnable::Run()
-{
-  nsresult rv;
-  nsCOMPtr<nsISynthVoiceRegistry> registry =
-    do_GetService(NS_SYNTHVOICEREGISTRY_CONTRACTID, &rv);
-  if (!registry) {
-    return rv;
-  }
-
-  for (OSXVoice voice : mVoices) {
-    rv = registry->AddVoice(mSpeechService, voice.mUri, voice.mName, voice.mLocale, true, false);
-    if (NS_WARN_IF(NS_FAILED(rv))) {
-      continue;
-    }
-
-    if (voice.mIsDefault) {
-      registry->SetDefaultVoice(voice.mUri, true);
-    }
-  }
-
-  registry->NotifyVoicesChanged();
-
-  return NS_OK;
-}
-
-class EnumVoicesRunnable final : public Runnable
-{
-public:
-  explicit EnumVoicesRunnable(OSXSpeechSynthesizerService* aSpeechService)
-    : mSpeechService(aSpeechService)
-  {
-  }
-
-  NS_IMETHOD Run() override;
-
-private:
-  ~EnumVoicesRunnable()
-  {
-  }
-
-  RefPtr<OSXSpeechSynthesizerService> mSpeechService;
-};
-
-NS_IMETHODIMP
-EnumVoicesRunnable::Run()
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  AutoTArray<OSXVoice, 64> list;
-
-  NSArray* voices = [NSSpeechSynthesizer availableVoices];
-  NSString* defaultVoice = [NSSpeechSynthesizer defaultVoice];
-
-  for (NSString* voice in voices) {
-    OSXVoice item;
-
-    NSDictionary* attr = [NSSpeechSynthesizer attributesForVoice:voice];
-
-    nsAutoString identifier;
-    nsCocoaUtils::GetStringForNSString([attr objectForKey:NSVoiceIdentifier],
-                                       identifier);
-
-    nsCocoaUtils::GetStringForNSString([attr objectForKey:NSVoiceName], item.mName);
-
-    nsCocoaUtils::GetStringForNSString(
-      [attr objectForKey:NSVoiceLocaleIdentifier], item.mLocale);
-    item.mLocale.ReplaceChar('_', '-');
-
-    item.mUri.AssignLiteral("urn:moz-tts:osx:");
-    item.mUri.Append(identifier);
-
-    if ([voice isEqualToString:defaultVoice]) {
-      item.mIsDefault = true;
-    }
-
-    list.AppendElement(item);
-  }
-
-  RefPtr<RegisterVoicesRunnable> runnable = new RegisterVoicesRunnable(mSpeechService, list);
-  NS_DispatchToMainThread(runnable, NS_DISPATCH_SYNC);
-
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-StaticRefPtr<OSXSpeechSynthesizerService> OSXSpeechSynthesizerService::sSingleton;
-
-NS_INTERFACE_MAP_BEGIN(OSXSpeechSynthesizerService)
-  NS_INTERFACE_MAP_ENTRY(nsISpeechService)
-  NS_INTERFACE_MAP_ENTRY(nsIObserver)
-  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISpeechService)
-NS_INTERFACE_MAP_END
-
-NS_IMPL_ADDREF(OSXSpeechSynthesizerService)
-NS_IMPL_RELEASE(OSXSpeechSynthesizerService)
-
-OSXSpeechSynthesizerService::OSXSpeechSynthesizerService()
-  : mInitialized(false)
-{
-}
-
-OSXSpeechSynthesizerService::~OSXSpeechSynthesizerService()
-{
-}
-
-bool
-OSXSpeechSynthesizerService::Init()
-{
-  if (Preferences::GetBool("media.webspeech.synth.test") ||
-      !Preferences::GetBool("media.webspeech.synth.enabled")) {
-    // When test is enabled, we shouldn't add OS backend (Bug 1160844)
-    return false;
-  }
-
-  nsCOMPtr<nsIThread> thread;
-  if (NS_FAILED(NS_NewNamedThread("SpeechWorker", getter_AddRefs(thread)))) {
-  	return false;
-  }
-
-  // Get all the voices and register in the SynthVoiceRegistry
-  nsCOMPtr<nsIRunnable> runnable = new EnumVoicesRunnable(this);
-  thread->Dispatch(runnable, NS_DISPATCH_NORMAL);
-
-  mInitialized = true;
-  return true;
-}
-
-NS_IMETHODIMP
-OSXSpeechSynthesizerService::Speak(const nsAString& aText,
-                                   const nsAString& aUri,
-                                   float aVolume,
-                                   float aRate,
-                                   float aPitch,
-                                   nsISpeechTask* aTask)
-{
-  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
-
-  MOZ_ASSERT(StringBeginsWith(aUri, NS_LITERAL_STRING("urn:moz-tts:osx:")),
-             "OSXSpeechSynthesizerService doesn't allow this voice URI");
-
-  NSSpeechSynthesizer* synth = [[NSSpeechSynthesizer alloc] init];
-  // strlen("urn:moz-tts:osx:") == 16
-  NSString* identifier = nsCocoaUtils::ToNSString(Substring(aUri, 16));
-  [synth setVoice:identifier];
-
-  // default rate is 180-220
-  [synth setObject:[NSNumber numberWithInt:aRate * 200]
-         forProperty:NSSpeechRateProperty error:nil];
-  // volume allows 0.0-1.0
-  [synth setObject:[NSNumber numberWithFloat:aVolume]
-         forProperty:NSSpeechVolumeProperty error:nil];
-  // Use default pitch value to calculate this
-  NSNumber* defaultPitch =
-    [synth objectForProperty:NSSpeechPitchBaseProperty error:nil];
-  if (defaultPitch) {
-    int newPitch = [defaultPitch intValue] * (aPitch / 2 + 0.5);
-    [synth setObject:[NSNumber numberWithInt:newPitch]
-           forProperty:NSSpeechPitchBaseProperty error:nil];
-  }
-
-  nsAutoString escapedText;
-  // We need to map the the offsets from the given text to the escaped text.
-  // The index of the offsets array is the position in the escaped text,
-  // the element value is the position in the user-supplied text.
-  nsTArray<size_t> offsets;
-  offsets.SetCapacity(aText.Length());
-
-  // This loop looks for occurances of "[[" or "]]", escapes them, and
-  // populates the offsets array to supply a map to the original offsets.
-  for (size_t i = 0; i < aText.Length(); i++) {
-    if (aText.Length() > i + 1 &&
-        ((aText[i] == ']' && aText[i+1] == ']') ||
-         (aText[i] == '[' && aText[i+1] == '['))) {
-      escapedText.AppendLiteral(DLIM_ESCAPE_START);
-      offsets.AppendElements(strlen(DLIM_ESCAPE_START));
-      escapedText.Append(aText[i]);
-      offsets.AppendElement(i);
-      escapedText.Append(aText[++i]);
-      offsets.AppendElement(i);
-      escapedText.AppendLiteral(DLIM_ESCAPE_END);
-      offsets.AppendElements(strlen(DLIM_ESCAPE_END));
-    } else {
-      escapedText.Append(aText[i]);
-      offsets.AppendElement(i);
-    }
-  }
-
-  RefPtr<SpeechTaskCallback> callback = new SpeechTaskCallback(aTask, synth, offsets);
-  nsresult rv = aTask->Setup(callback, 0, 0, 0);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  SpeechDelegate* delegate = [[SpeechDelegate alloc] initWithCallback:callback];
-  [synth setDelegate:delegate];
-  [delegate release ];
-
-  NSString* text = nsCocoaUtils::ToNSString(escapedText);
-  BOOL success = [synth startSpeakingString:text];
-  NS_ENSURE_TRUE(success, NS_ERROR_FAILURE);
-
-  aTask->DispatchStart();
-  return NS_OK;
-
-  NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
-}
-
-NS_IMETHODIMP
-OSXSpeechSynthesizerService::GetServiceType(SpeechServiceType* aServiceType)
-{
-  *aServiceType = nsISpeechService::SERVICETYPE_INDIRECT_AUDIO;
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-OSXSpeechSynthesizerService::Observe(nsISupports* aSubject, const char* aTopic,
-                                     const char16_t* aData)
-{
-  return NS_OK;
-}
-
-OSXSpeechSynthesizerService*
-OSXSpeechSynthesizerService::GetInstance()
-{
-  MOZ_ASSERT(NS_IsMainThread());
-  if (XRE_GetProcessType() != GeckoProcessType_Default) {
-    return nullptr;
-  }
-
-  if (!sSingleton) {
-    RefPtr<OSXSpeechSynthesizerService> speechService =
-      new OSXSpeechSynthesizerService();
-    if (speechService->Init()) {
-      sSingleton = speechService;
-    }
-  }
-  return sSingleton;
-}
-
-already_AddRefed<OSXSpeechSynthesizerService>
-OSXSpeechSynthesizerService::GetInstanceForService()
-{
-  RefPtr<OSXSpeechSynthesizerService> speechService = GetInstance();
-  return speechService.forget();
-}
-
-void
-OSXSpeechSynthesizerService::Shutdown()
-{
-  if (!sSingleton) {
-    return;
-  }
-  sSingleton = nullptr;
-}
-
-} // namespace dom
-} // namespace mozilla
diff --git a/dom/media/webspeech/synth/cocoa/moz.build b/dom/media/webspeech/synth/cocoa/moz.build
deleted file mode 100644
index 6953a81e95..0000000000
--- a/dom/media/webspeech/synth/cocoa/moz.build
+++ /dev/null
@@ -1,11 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-SOURCES += [
-  'OSXSpeechSynthesizerModule.cpp',
-  'OSXSpeechSynthesizerService.mm'
-]
-
-FINAL_LIBRARY = 'xul'
diff --git a/dom/media/webspeech/synth/moz.build b/dom/media/webspeech/synth/moz.build
index 6603689261..9784686dfe 100644
--- a/dom/media/webspeech/synth/moz.build
+++ b/dom/media/webspeech/synth/moz.build
@@ -32,9 +32,6 @@ SOURCES += [
 if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'windows':
     DIRS += ['windows']
 
-if CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    DIRS += ['cocoa']
-
 if CONFIG['MOZ_SYNTH_SPEECHD']:
     DIRS += ['speechd']
 
diff --git a/dom/moz.build b/dom/moz.build
index f02a4a5d6f..b324de2cb0 100644
--- a/dom/moz.build
+++ b/dom/moz.build
@@ -112,6 +112,6 @@ TEST_DIRS += [
     'imptests',
 ]
 
-if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3', 'cocoa', 'windows', 'android'):
+if CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3', 'windows', 'android'):
     TEST_DIRS += ['plugins/test']
 
diff --git a/dom/plugins/base/moz.build b/dom/plugins/base/moz.build
index 08f87d56a3..11649a8626 100644
--- a/dom/plugins/base/moz.build
+++ b/dom/plugins/base/moz.build
@@ -56,11 +56,6 @@ if CONFIG['OS_ARCH'] == 'WINNT':
         'nsPluginNativeWindowWin.cpp',
         'nsPluginsDirWin.cpp',
     ]
-elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    SOURCES += [
-        'nsPluginNativeWindow.cpp',
-        'nsPluginsDirDarwin.cpp',
-    ]
 else:
     SOURCES += [
         'nsPluginsDirUnix.cpp',
@@ -82,7 +77,6 @@ LOCAL_INCLUDES += [
     '/layout/xul',
     '/netwerk/base',
     '/widget',
-    '/widget/cocoa',
     '/xpcom/base',
 ]
 
diff --git a/dom/plugins/base/nsPluginsDirDarwin.cpp b/dom/plugins/base/nsPluginsDirDarwin.cpp
deleted file mode 100644
index 0085eec0d6..0000000000
--- a/dom/plugins/base/nsPluginsDirDarwin.cpp
+++ /dev/null
@@ -1,572 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*
-  nsPluginsDirDarwin.cpp
-  
-  Mac OS X implementation of the nsPluginsDir/nsPluginsFile classes.
-  
-  by Patrick C. Beard.
- */
-
-#include "GeckoChildProcessHost.h"
-#include "base/process_util.h"
-
-#include "prlink.h"
-#include "prnetdb.h"
-#include "nsXPCOM.h"
-
-#include "nsPluginsDir.h"
-#include "nsNPAPIPlugin.h"
-#include "nsPluginsDirUtils.h"
-
-#include "nsILocalFileMac.h"
-#include "mozilla/UniquePtr.h"
-
-#include "nsCocoaFeatures.h"
-
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-
-#include <Carbon/Carbon.h>
-#include <CoreServices/CoreServices.h>
-#include <mach-o/loader.h>
-#include <mach-o/fat.h>
-
-typedef NS_NPAPIPLUGIN_CALLBACK(const char *, NP_GETMIMEDESCRIPTION) ();
-typedef NS_NPAPIPLUGIN_CALLBACK(OSErr, BP_GETSUPPORTEDMIMETYPES) (BPSupportedMIMETypes *mimeInfo, UInt32 flags);
-
-/*
-** Returns a CFBundleRef if the path refers to a Mac OS X bundle directory.
-** The caller is responsible for calling CFRelease() to deallocate.
-*/
-static CFBundleRef getPluginBundle(const char* path)
-{
-  CFBundleRef bundle = nullptr;
-  CFStringRef pathRef = ::CFStringCreateWithCString(nullptr, path,
-                                                    kCFStringEncodingUTF8);
-  if (pathRef) {
-    CFURLRef bundleURL = ::CFURLCreateWithFileSystemPath(nullptr, pathRef,
-                                                         kCFURLPOSIXPathStyle,
-                                                         true);
-    if (bundleURL) {
-      bundle = ::CFBundleCreate(nullptr, bundleURL);
-      ::CFRelease(bundleURL);
-    }
-    ::CFRelease(pathRef);
-  }
-  return bundle;
-}
-
-static nsresult toCFURLRef(nsIFile* file, CFURLRef& outURL)
-{
-  nsCOMPtr<nsILocalFileMac> lfm = do_QueryInterface(file);
-  if (!lfm)
-    return NS_ERROR_FAILURE;
-  CFURLRef url;
-  nsresult rv = lfm->GetCFURL(&url);
-  if (NS_SUCCEEDED(rv))
-    outURL = url;
-  
-  return rv;
-}
-
-bool nsPluginsDir::IsPluginFile(nsIFile* file)
-{
-  nsCString fileName;
-  file->GetNativeLeafName(fileName);
-  /*
-   * Don't load the VDP fake plugin, to avoid tripping a bad bug in OS X
-   * 10.5.3 (see bug 436575).
-   */
-  if (!strcmp(fileName.get(), "VerifiedDownloadPlugin.plugin")) {
-    NS_WARNING("Preventing load of VerifiedDownloadPlugin.plugin (see bug 436575)");
-    return false;
-  }
-  return true;
-}
-
-// Caller is responsible for freeing returned buffer.
-static char* CFStringRefToUTF8Buffer(CFStringRef cfString)
-{
-  const char* buffer = ::CFStringGetCStringPtr(cfString, kCFStringEncodingUTF8);
-  if (buffer) {
-    return PL_strdup(buffer);
-  }
-
-  int bufferLength =
-    ::CFStringGetMaximumSizeForEncoding(::CFStringGetLength(cfString),
-                                        kCFStringEncodingUTF8) + 1;
-  char* newBuffer = static_cast<char*>(moz_xmalloc(bufferLength));
-  if (!newBuffer) {
-    return nullptr;
-  }
-
-  if (!::CFStringGetCString(cfString, newBuffer, bufferLength,
-                            kCFStringEncodingUTF8)) {
-    free(newBuffer);
-    return nullptr;
-  }
-
-  newBuffer = static_cast<char*>(moz_xrealloc(newBuffer,
-                                              strlen(newBuffer) + 1));
-  return newBuffer;
-}
-
-class AutoCFTypeObject {
-public:
-  explicit AutoCFTypeObject(CFTypeRef aObject)
-  {
-    mObject = aObject;
-  }
-  ~AutoCFTypeObject()
-  {
-    ::CFRelease(mObject);
-  }
-private:
-  CFTypeRef mObject;
-};
-
-static Boolean MimeTypeEnabled(CFDictionaryRef mimeDict) {
-  if (!mimeDict) {
-    return true;
-  }
-  
-  CFTypeRef value;
-  if (::CFDictionaryGetValueIfPresent(mimeDict, CFSTR("WebPluginTypeEnabled"), &value)) {
-    if (value && ::CFGetTypeID(value) == ::CFBooleanGetTypeID()) {
-      return ::CFBooleanGetValue(static_cast<CFBooleanRef>(value));
-    }
-  }
-  return true;
-}
-
-static CFDictionaryRef ParsePlistForMIMETypesFilename(CFBundleRef bundle)
-{
-  CFTypeRef mimeFileName = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginMIMETypesFilename"));
-  if (!mimeFileName || ::CFGetTypeID(mimeFileName) != ::CFStringGetTypeID()) {
-    return nullptr;
-  }
-  
-  FSRef homeDir;
-  if (::FSFindFolder(kUserDomain, kCurrentUserFolderType, kDontCreateFolder, &homeDir) != noErr) {
-    return nullptr;
-  }
-  
-  CFURLRef userDirURL = ::CFURLCreateFromFSRef(kCFAllocatorDefault, &homeDir);
-  if (!userDirURL) {
-    return nullptr;
-  }
-  
-  AutoCFTypeObject userDirURLAutorelease(userDirURL);
-  CFStringRef mimeFilePath = ::CFStringCreateWithFormat(kCFAllocatorDefault, nullptr, CFSTR("Library/Preferences/%@"), static_cast<CFStringRef>(mimeFileName));
-  if (!mimeFilePath) {
-    return nullptr;
-  }
-  
-  AutoCFTypeObject mimeFilePathAutorelease(mimeFilePath);
-  CFURLRef mimeFileURL = ::CFURLCreateWithFileSystemPathRelativeToBase(kCFAllocatorDefault, mimeFilePath, kCFURLPOSIXPathStyle, false, userDirURL);
-  if (!mimeFileURL) {
-    return nullptr;
-  }
-  
-  AutoCFTypeObject mimeFileURLAutorelease(mimeFileURL);
-  SInt32 errorCode = 0;
-  CFDataRef mimeFileData = nullptr;
-  Boolean result = ::CFURLCreateDataAndPropertiesFromResource(kCFAllocatorDefault, mimeFileURL, &mimeFileData, nullptr, nullptr, &errorCode);
-  if (!result) {
-    return nullptr;
-  }
-  
-  AutoCFTypeObject mimeFileDataAutorelease(mimeFileData);
-  if (errorCode != 0) {
-    return nullptr;
-  }
-  
-  CFPropertyListRef propertyList = ::CFPropertyListCreateFromXMLData(kCFAllocatorDefault, mimeFileData, kCFPropertyListImmutable, nullptr);
-  if (!propertyList) {
-    return nullptr;
-  }
-  
-  AutoCFTypeObject propertyListAutorelease(propertyList);
-  if (::CFGetTypeID(propertyList) != ::CFDictionaryGetTypeID()) {
-    return nullptr;
-  }
-
-  CFTypeRef mimeTypes = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(propertyList), CFSTR("WebPluginMIMETypes"));
-  if (!mimeTypes || ::CFGetTypeID(mimeTypes) != ::CFDictionaryGetTypeID() || ::CFDictionaryGetCount(static_cast<CFDictionaryRef>(mimeTypes)) == 0) {
-    return nullptr;
-  }
-  
-  return static_cast<CFDictionaryRef>(::CFRetain(mimeTypes));
-}
-
-static void ParsePlistPluginInfo(nsPluginInfo& info, CFBundleRef bundle)
-{
-  CFDictionaryRef mimeDict = ParsePlistForMIMETypesFilename(bundle);
-  
-  if (!mimeDict) {
-    CFTypeRef mimeTypes = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginMIMETypes"));
-    if (!mimeTypes || ::CFGetTypeID(mimeTypes) != ::CFDictionaryGetTypeID() || ::CFDictionaryGetCount(static_cast<CFDictionaryRef>(mimeTypes)) == 0)
-      return;
-    mimeDict = static_cast<CFDictionaryRef>(::CFRetain(mimeTypes));
-  }
-  
-  AutoCFTypeObject mimeDictAutorelease(mimeDict);
-  int mimeDictKeyCount = ::CFDictionaryGetCount(mimeDict);
-
-  // Allocate memory for mime data
-  int mimeDataArraySize = mimeDictKeyCount * sizeof(char*);
-  info.fMimeTypeArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
-  if (!info.fMimeTypeArray)
-    return;
-  memset(info.fMimeTypeArray, 0, mimeDataArraySize);
-  info.fExtensionArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
-  if (!info.fExtensionArray)
-    return;
-  memset(info.fExtensionArray, 0, mimeDataArraySize);
-  info.fMimeDescriptionArray = static_cast<char**>(moz_xmalloc(mimeDataArraySize));
-  if (!info.fMimeDescriptionArray)
-    return;
-  memset(info.fMimeDescriptionArray, 0, mimeDataArraySize);
-
-  // Allocate memory for mime dictionary keys and values
-  mozilla::UniquePtr<CFTypeRef[]> keys(new CFTypeRef[mimeDictKeyCount]);
-  if (!keys)
-    return;
-  mozilla::UniquePtr<CFTypeRef[]> values(new CFTypeRef[mimeDictKeyCount]);
-  if (!values)
-    return;
-  
-  info.fVariantCount = 0;
-
-  ::CFDictionaryGetKeysAndValues(mimeDict, keys.get(), values.get());
-  for (int i = 0; i < mimeDictKeyCount; i++) {
-    CFTypeRef mimeString = keys[i];
-    if (!mimeString || ::CFGetTypeID(mimeString) != ::CFStringGetTypeID()) {
-      continue;
-    }
-    CFTypeRef mimeDict = values[i];
-    if (mimeDict && ::CFGetTypeID(mimeDict) == ::CFDictionaryGetTypeID()) {
-      if (!MimeTypeEnabled(static_cast<CFDictionaryRef>(mimeDict))) {
-        continue;
-      }
-      info.fMimeTypeArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(mimeString));
-      if (!info.fMimeTypeArray[info.fVariantCount]) {
-        continue;
-      }
-      CFTypeRef extensions = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(mimeDict), CFSTR("WebPluginExtensions"));
-      if (extensions && ::CFGetTypeID(extensions) == ::CFArrayGetTypeID()) {
-        int extensionCount = ::CFArrayGetCount(static_cast<CFArrayRef>(extensions));
-        CFMutableStringRef extensionList = ::CFStringCreateMutable(kCFAllocatorDefault, 0);
-        for (int j = 0; j < extensionCount; j++) {
-          CFTypeRef extension = ::CFArrayGetValueAtIndex(static_cast<CFArrayRef>(extensions), j);
-          if (extension && ::CFGetTypeID(extension) == ::CFStringGetTypeID()) {
-            if (j > 0)
-              ::CFStringAppend(extensionList, CFSTR(","));
-            ::CFStringAppend(static_cast<CFMutableStringRef>(extensionList), static_cast<CFStringRef>(extension));
-          }
-        }
-        info.fExtensionArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(extensionList));
-        ::CFRelease(extensionList);
-      }
-      CFTypeRef description = ::CFDictionaryGetValue(static_cast<CFDictionaryRef>(mimeDict), CFSTR("WebPluginTypeDescription"));
-      if (description && ::CFGetTypeID(description) == ::CFStringGetTypeID())
-        info.fMimeDescriptionArray[info.fVariantCount] = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(description));
-    }
-    info.fVariantCount++;
-  }
-}
-
-nsPluginFile::nsPluginFile(nsIFile *spec)
-    : mPlugin(spec)
-{
-}
-
-nsPluginFile::~nsPluginFile() {}
-
-nsresult nsPluginFile::LoadPlugin(PRLibrary **outLibrary)
-{
-  if (!mPlugin)
-    return NS_ERROR_NULL_POINTER;
-
-  // 64-bit NSPR does not (yet) support bundles.  So in 64-bit builds we need
-  // (for now) to load the bundle's executable.  However this can cause
-  // problems:  CFBundleCreate() doesn't run the bundle's executable's
-  // initialization code, while NSAddImage() and dlopen() do run it.  So using
-  // NSPR's dyld loading mechanisms here (NSAddImage() or dlopen()) can cause
-  // a bundle's initialization code to run earlier than expected, and lead to
-  // crashes.  See bug 577967.
-#ifdef __LP64__
-  char executablePath[PATH_MAX];
-  executablePath[0] = '\0';
-  nsAutoCString bundlePath;
-  mPlugin->GetNativePath(bundlePath);
-  CFStringRef pathRef = ::CFStringCreateWithCString(nullptr, bundlePath.get(),
-                                                    kCFStringEncodingUTF8);
-  if (pathRef) {
-    CFURLRef bundleURL = ::CFURLCreateWithFileSystemPath(nullptr, pathRef,
-                                                         kCFURLPOSIXPathStyle,
-                                                         true);
-    if (bundleURL) {
-      CFBundleRef bundle = ::CFBundleCreate(nullptr, bundleURL);
-      if (bundle) {
-        CFURLRef executableURL = ::CFBundleCopyExecutableURL(bundle);
-        if (executableURL) {
-          if (!::CFURLGetFileSystemRepresentation(executableURL, true, (UInt8*)&executablePath, PATH_MAX))
-            executablePath[0] = '\0';
-          ::CFRelease(executableURL);
-        }
-        ::CFRelease(bundle);
-      }
-      ::CFRelease(bundleURL);
-    }
-    ::CFRelease(pathRef); 
-  }
-#else
-  nsAutoCString bundlePath;
-  mPlugin->GetNativePath(bundlePath);
-  const char *executablePath = bundlePath.get();
-#endif
-
-  *outLibrary = PR_LoadLibrary(executablePath);
-  pLibrary = *outLibrary;
-  if (!pLibrary) {
-    return NS_ERROR_FAILURE;
-  }
-#ifdef DEBUG
-  printf("[loaded plugin %s]\n", bundlePath.get());
-#endif
-  return NS_OK;
-}
-
-static char* p2cstrdup(StringPtr pstr)
-{
-  int len = pstr[0];
-  char* cstr = static_cast<char*>(moz_xmalloc(len + 1));
-  if (cstr) {
-    memmove(cstr, pstr + 1, len);
-    cstr[len] = '\0';
-  }
-  return cstr;
-}
-
-static char* GetNextPluginStringFromHandle(Handle h, short *index)
-{
-  char *ret = p2cstrdup((unsigned char*)(*h + *index));
-  *index += (ret ? strlen(ret) : 0) + 1;
-  return ret;
-}
-
-static bool IsCompatibleArch(nsIFile *file)
-{
-  CFURLRef pluginURL = nullptr;
-  if (NS_FAILED(toCFURLRef(file, pluginURL)))
-    return false;
-  
-  bool isPluginFile = false;
-
-  CFBundleRef pluginBundle = ::CFBundleCreate(kCFAllocatorDefault, pluginURL);
-  if (pluginBundle) {
-    UInt32 packageType, packageCreator;
-    ::CFBundleGetPackageInfo(pluginBundle, &packageType, &packageCreator);
-    if (packageType == 'BRPL' || packageType == 'IEPL' || packageType == 'NSPL') {
-      // Get path to plugin as a C string.
-      char executablePath[PATH_MAX];
-      executablePath[0] = '\0';
-      if (!::CFURLGetFileSystemRepresentation(pluginURL, true, (UInt8*)&executablePath, PATH_MAX)) {
-        executablePath[0] = '\0';
-      }
-
-      uint32_t pluginLibArchitectures;
-      nsresult rv = mozilla::ipc::GeckoChildProcessHost::GetArchitecturesForBinary(executablePath, &pluginLibArchitectures);
-      if (NS_FAILED(rv)) {
-        return false;
-      }
-
-      uint32_t supportedArchitectures =
-#ifdef __LP64__
-          mozilla::ipc::GeckoChildProcessHost::GetSupportedArchitecturesForProcessType(GeckoProcessType_Plugin);
-#else
-          base::GetCurrentProcessArchitecture();
-#endif
-
-      // Consider the plugin architecture valid if there is any overlap in the masks.
-      isPluginFile = !!(supportedArchitectures & pluginLibArchitectures);
-    }
-    ::CFRelease(pluginBundle);
-  }
-
-  ::CFRelease(pluginURL);
-  return isPluginFile;
-}
-
-/**
- * Obtains all of the information currently available for this plugin.
- */
-nsresult nsPluginFile::GetPluginInfo(nsPluginInfo& info, PRLibrary **outLibrary)
-{
-  *outLibrary = nullptr;
-
-  nsresult rv = NS_OK;
-
-  if (!IsCompatibleArch(mPlugin)) {
-      return NS_ERROR_FAILURE;
-  }
-
-  // clear out the info, except for the first field.
-  memset(&info, 0, sizeof(info));
-
-  // Try to get a bundle reference.
-  nsAutoCString path;
-  if (NS_FAILED(rv = mPlugin->GetNativePath(path)))
-    return rv;
-  CFBundleRef bundle = getPluginBundle(path.get());
-
-  // fill in full path
-  info.fFullPath = PL_strdup(path.get());
-
-  // fill in file name
-  nsAutoCString fileName;
-  if (NS_FAILED(rv = mPlugin->GetNativeLeafName(fileName)))
-    return rv;
-  info.fFileName = PL_strdup(fileName.get());
-
-  // Get fName
-  if (bundle) {
-    CFTypeRef name = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginName"));
-    if (name && ::CFGetTypeID(name) == ::CFStringGetTypeID())
-      info.fName = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(name));
-  }
-
-  // Get fDescription
-  if (bundle) {
-    CFTypeRef description = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("WebPluginDescription"));
-    if (description && ::CFGetTypeID(description) == ::CFStringGetTypeID())
-      info.fDescription = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(description));
-  }
-
-  // Get fVersion
-  if (bundle) {
-    // Look for the release version first
-    CFTypeRef version = ::CFBundleGetValueForInfoDictionaryKey(bundle, CFSTR("CFBundleShortVersionString"));
-    if (!version) // try the build version
-      version = ::CFBundleGetValueForInfoDictionaryKey(bundle, kCFBundleVersionKey);
-    if (version && ::CFGetTypeID(version) == ::CFStringGetTypeID())
-      info.fVersion = CFStringRefToUTF8Buffer(static_cast<CFStringRef>(version));
-  }
-
-  // The last thing we need to do is get MIME data
-  // fVariantCount, fMimeTypeArray, fExtensionArray, fMimeDescriptionArray
-
-  // First look for data in a bundle plist
-  if (bundle) {
-    ParsePlistPluginInfo(info, bundle);
-    ::CFRelease(bundle);
-    if (info.fVariantCount > 0)
-      return NS_OK;
-  }
-
-  // Don't load "fbplugin" or any plugins whose name starts with "fbplugin_"
-  // (Facebook plugins) if we're running on OS X 10.10 (Yosemite) or later.
-  // A "fbplugin" file crashes on load, in the call to LoadPlugin() below.
-  // See bug 1086977.
-  if (nsCocoaFeatures::OnYosemiteOrLater()) {
-    if (fileName.EqualsLiteral("fbplugin") ||
-        StringBeginsWith(fileName, NS_LITERAL_CSTRING("fbplugin_"))) {
-      nsAutoCString msg;
-      msg.AppendPrintf("Preventing load of %s (see bug 1086977)",
-                       fileName.get());
-      NS_WARNING(msg.get());
-      return NS_ERROR_FAILURE;
-    }
-  }
-
-  // It's possible that our plugin has 2 entry points that'll give us mime type
-  // info. Quicktime does this to get around the need of having admin rights to
-  // change mime info in the resource fork. We need to use this info instead of
-  // the resource. See bug 113464.
-
-  // Sadly we have to load the library for this to work.
-  rv = LoadPlugin(outLibrary);
-  if (NS_FAILED(rv))
-    return rv;
-
-  // Try to get data from NP_GetMIMEDescription
-  if (pLibrary) {
-    NP_GETMIMEDESCRIPTION pfnGetMimeDesc = (NP_GETMIMEDESCRIPTION)PR_FindFunctionSymbol(pLibrary, NP_GETMIMEDESCRIPTION_NAME); 
-    if (pfnGetMimeDesc)
-      ParsePluginMimeDescription(pfnGetMimeDesc(), info);
-    if (info.fVariantCount)
-      return NS_OK;
-  }
-
-  // We'll fill this in using BP_GetSupportedMIMETypes and/or resource fork data
-  BPSupportedMIMETypes mi = {kBPSupportedMIMETypesStructVers_1, nullptr, nullptr};
-
-  // Try to get data from BP_GetSupportedMIMETypes
-  if (pLibrary) {
-    BP_GETSUPPORTEDMIMETYPES pfnMime = (BP_GETSUPPORTEDMIMETYPES)PR_FindFunctionSymbol(pLibrary, "BP_GetSupportedMIMETypes");
-    if (pfnMime && noErr == pfnMime(&mi, 0) && mi.typeStrings) {
-      info.fVariantCount = (**(short**)mi.typeStrings) / 2;
-      ::HLock(mi.typeStrings);
-      if (mi.infoStrings)  // it's possible some plugins have infoStrings missing
-        ::HLock(mi.infoStrings);
-    }
-  }
-
-  // Fill in the info struct based on the data in the BPSupportedMIMETypes struct
-  int variantCount = info.fVariantCount;
-  info.fMimeTypeArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
-  if (!info.fMimeTypeArray)
-    return NS_ERROR_OUT_OF_MEMORY;
-  info.fExtensionArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
-  if (!info.fExtensionArray)
-    return NS_ERROR_OUT_OF_MEMORY;
-  if (mi.infoStrings) {
-    info.fMimeDescriptionArray = static_cast<char**>(moz_xmalloc(variantCount * sizeof(char*)));
-    if (!info.fMimeDescriptionArray)
-      return NS_ERROR_OUT_OF_MEMORY;
-  }
-  short mimeIndex = 2;
-  short descriptionIndex = 2;
-  for (int i = 0; i < variantCount; i++) {
-    info.fMimeTypeArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
-    info.fExtensionArray[i] = GetNextPluginStringFromHandle(mi.typeStrings, &mimeIndex);
-    if (mi.infoStrings)
-      info.fMimeDescriptionArray[i] = GetNextPluginStringFromHandle(mi.infoStrings, &descriptionIndex);
-  }
-
-  ::HUnlock(mi.typeStrings);
-  ::DisposeHandle(mi.typeStrings);
-  if (mi.infoStrings) {
-    ::HUnlock(mi.infoStrings);
-    ::DisposeHandle(mi.infoStrings);
-  }
-
-  return NS_OK;
-}
-
-nsresult nsPluginFile::FreePluginInfo(nsPluginInfo& info)
-{
-  free(info.fName);
-  free(info.fDescription);
-  int variantCount = info.fVariantCount;
-  for (int i = 0; i < variantCount; i++) {
-    free(info.fMimeTypeArray[i]);
-    free(info.fExtensionArray[i]);
-    free(info.fMimeDescriptionArray[i]);
-  }
-  free(info.fMimeTypeArray);
-  free(info.fMimeDescriptionArray);
-  free(info.fExtensionArray);
-  free(info.fFileName);
-  free(info.fFullPath);
-  free(info.fVersion);
-
-  return NS_OK;
-}
diff --git a/dom/system/mac/CoreLocationLocationProvider.h b/dom/system/mac/CoreLocationLocationProvider.h
deleted file mode 100644
index 979bc916d8..0000000000
--- a/dom/system/mac/CoreLocationLocationProvider.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "nsCOMPtr.h"
-#include "nsIGeolocationProvider.h"
-
-
-/*
- * The CoreLocationObjects class contains the CoreLocation objects
- * we'll need.
- *
- * Declaring them directly in CoreLocationLocationProvider
- * would require Objective-C++ syntax, which would contaminate all
- * files that include this header and require them to be Objective-C++
- * as well.
- *
- * The solution then is to forward-declare CoreLocationObjects here and
- * hold a pointer to it in CoreLocationLocationProvider, and only actually
- * define it in CoreLocationLocationProvider.mm, thus making it safe
- * for nsGeolocation.cpp, which is C++-only, to include this header.
- */
-class CoreLocationObjects;
-class MLSFallback;
-
-class CoreLocationLocationProvider
-  : public nsIGeolocationProvider
-{
-public:
-  NS_DECL_ISUPPORTS
-  NS_DECL_NSIGEOLOCATIONPROVIDER
-
-  CoreLocationLocationProvider();
-  void NotifyError(uint16_t aErrorCode);
-  void Update(nsIDOMGeoPosition* aSomewhere);
-  void CreateMLSFallbackProvider();
-  void CancelMLSFallbackProvider();
-
-private:
-  virtual ~CoreLocationLocationProvider();
-
-  CoreLocationObjects* mCLObjects;
-  nsCOMPtr<nsIGeolocationUpdate> mCallback;
-  RefPtr<MLSFallback> mMLSFallbackProvider;
-
-  class MLSUpdate : public nsIGeolocationUpdate
-  {
-  public:
-    NS_DECL_ISUPPORTS
-    NS_DECL_NSIGEOLOCATIONUPDATE
-
-    explicit MLSUpdate(CoreLocationLocationProvider& parentProvider);
-
-  private:
-    CoreLocationLocationProvider& mParentLocationProvider;
-    virtual ~MLSUpdate();
-  };
-};
diff --git a/dom/system/mac/CoreLocationLocationProvider.mm b/dom/system/mac/CoreLocationLocationProvider.mm
deleted file mode 100644
index 7a3feba97b..0000000000
--- a/dom/system/mac/CoreLocationLocationProvider.mm
+++ /dev/null
@@ -1,268 +0,0 @@
-/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim:set ts=2 sw=2 sts=2 et cindent: */
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#include "nsAutoPtr.h"
-#include "nsCOMPtr.h"
-#include "nsGeoPosition.h"
-#include "nsIConsoleService.h"
-#include "nsServiceManagerUtils.h"
-#include "nsIDOMGeoPositionError.h"
-#include "CoreLocationLocationProvider.h"
-#include "nsCocoaFeatures.h"
-#include "prtime.h"
-#include "MLSFallback.h"
-
-#include <CoreLocation/CLError.h>
-#include <CoreLocation/CLLocation.h>
-#include <CoreLocation/CLLocationManager.h>
-#include <CoreLocation/CLLocationManagerDelegate.h>
-
-#include <objc/objc.h>
-#include <objc/objc-runtime.h>
-
-#include "nsObjCExceptions.h"
-
-using namespace mozilla;
-
-static const CLLocationAccuracy kHIGH_ACCURACY = kCLLocationAccuracyBest;
-static const CLLocationAccuracy kDEFAULT_ACCURACY = kCLLocationAccuracyNearestTenMeters;
-
-@interface LocationDelegate : NSObject <CLLocationManagerDelegate>
-{
-  CoreLocationLocationProvider* mProvider;
-}
-
-- (id)init:(CoreLocationLocationProvider*)aProvider;
-- (void)locationManager:(CLLocationManager*)aManager
-  didFailWithError:(NSError *)aError;
-- (void)locationManager:(CLLocationManager*)aManager didUpdateLocations:(NSArray*)locations;
-
-@end
-
-@implementation LocationDelegate
-- (id) init:(CoreLocationLocationProvider*) aProvider
-{
-  if ((self = [super init])) {
-    mProvider = aProvider;
-  }
-
-  return self;
-}
-
-- (void)locationManager:(CLLocationManager*)aManager
-  didFailWithError:(NSError *)aError
-{
-  nsCOMPtr<nsIConsoleService> console =
-    do_GetService(NS_CONSOLESERVICE_CONTRACTID);
-
-  NS_ENSURE_TRUE_VOID(console);
-
-  NSString* message =
-    [@"Failed to acquire position: " stringByAppendingString: [aError localizedDescription]];
-
-  console->LogStringMessage(NS_ConvertUTF8toUTF16([message UTF8String]).get());
-
-  if ([aError code] == kCLErrorDenied) {
-    mProvider->NotifyError(nsIDOMGeoPositionError::PERMISSION_DENIED);
-    return;
-  }
-
-  // The CL provider does not fallback to GeoIP, so use NetworkGeolocationProvider for this.
-  // The concept here is: on error, hand off geolocation to MLS, which will then report
-  // back a location or error. We can't call this with no delay however, as this method
-  // is called with an error code of 0 in both failed geolocation cases, and also when
-  // geolocation is not immediately available.
-  // The 2 sec delay is arbitrarily large enough that CL has a reasonable head start and
-  // if it is likely to succeed, it should complete before the MLS provider.
-  // Take note that in locationManager:didUpdateLocations: the handoff to MLS is stopped.
-  mProvider->CreateMLSFallbackProvider();
-}
-
-- (void)locationManager:(CLLocationManager*)aManager didUpdateLocations:(NSArray*)aLocations
-{
-  if (aLocations.count < 1) {
-    return;
-  }
-
-  mProvider->CancelMLSFallbackProvider();
-
-  CLLocation* location = [aLocations objectAtIndex:0];
-
-  nsCOMPtr<nsIDOMGeoPosition> geoPosition =
-    new nsGeoPosition(location.coordinate.latitude,
-                      location.coordinate.longitude,
-                      location.altitude,
-                      location.horizontalAccuracy,
-                      location.verticalAccuracy,
-                      location.course,
-                      location.speed,
-                      PR_Now() / PR_USEC_PER_MSEC);
-
-  mProvider->Update(geoPosition);
-}
-@end
-
-NS_IMPL_ISUPPORTS(CoreLocationLocationProvider::MLSUpdate, nsIGeolocationUpdate);
-
-CoreLocationLocationProvider::MLSUpdate::MLSUpdate(CoreLocationLocationProvider& parentProvider)
-  : mParentLocationProvider(parentProvider)
-{
-}
-
-CoreLocationLocationProvider::MLSUpdate::~MLSUpdate()
-{
-}
-
-NS_IMETHODIMP
-CoreLocationLocationProvider::MLSUpdate::Update(nsIDOMGeoPosition *position)
-{
-  nsCOMPtr<nsIDOMGeoPositionCoords> coords;
-  position->GetCoords(getter_AddRefs(coords));
-  if (!coords) {
-    return NS_ERROR_FAILURE;
-  }
-  mParentLocationProvider.Update(position);
-  return NS_OK;
-}
-NS_IMETHODIMP
-CoreLocationLocationProvider::MLSUpdate::NotifyError(uint16_t error)
-{
-  mParentLocationProvider.NotifyError(error);
-  return NS_OK;
-}
-class CoreLocationObjects {
-public:
-  nsresult Init(CoreLocationLocationProvider* aProvider) {
-    mLocationManager = [[CLLocationManager alloc] init];
-    NS_ENSURE_TRUE(mLocationManager, NS_ERROR_NOT_AVAILABLE);
-
-    mLocationDelegate = [[LocationDelegate alloc] init:aProvider];
-    NS_ENSURE_TRUE(mLocationDelegate, NS_ERROR_NOT_AVAILABLE);
-
-    mLocationManager.desiredAccuracy = kDEFAULT_ACCURACY;
-    mLocationManager.delegate = mLocationDelegate;
-
-    return NS_OK;
-  }
-
-  ~CoreLocationObjects() {
-    if (mLocationManager) {
-      [mLocationManager release];
-    }
-
-    if (mLocationDelegate) {
-      [mLocationDelegate release];
-    }
-  }
-
-  LocationDelegate* mLocationDelegate;
-  CLLocationManager* mLocationManager;
-};
-
-NS_IMPL_ISUPPORTS(CoreLocationLocationProvider, nsIGeolocationProvider)
-
-CoreLocationLocationProvider::CoreLocationLocationProvider()
-  : mCLObjects(nullptr), mMLSFallbackProvider(nullptr)
-{
-}
-
-CoreLocationLocationProvider::~CoreLocationLocationProvider()
-{
-}
-
-NS_IMETHODIMP
-CoreLocationLocationProvider::Startup()
-{
-  if (!mCLObjects) {
-    nsAutoPtr<CoreLocationObjects> clObjs(new CoreLocationObjects());
-
-    nsresult rv = clObjs->Init(this);
-    NS_ENSURE_SUCCESS(rv, rv);
-
-    mCLObjects = clObjs.forget();
-  }
-
-  // Must be stopped before starting or response (success or failure) is not guaranteed
-  [mCLObjects->mLocationManager stopUpdatingLocation];
-  [mCLObjects->mLocationManager startUpdatingLocation];
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-CoreLocationLocationProvider::Watch(nsIGeolocationUpdate* aCallback)
-{
-  if (mCallback) {
-    return NS_OK;
-  }
-
-  mCallback = aCallback;
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-CoreLocationLocationProvider::Shutdown()
-{
-  NS_ENSURE_STATE(mCLObjects);
-
-  [mCLObjects->mLocationManager stopUpdatingLocation];
-
-  delete mCLObjects;
-  mCLObjects = nullptr;
-
-  if (mMLSFallbackProvider) {
-    mMLSFallbackProvider->Shutdown();
-    mMLSFallbackProvider = nullptr;
-  }
-
-  return NS_OK;
-}
-
-NS_IMETHODIMP
-CoreLocationLocationProvider::SetHighAccuracy(bool aEnable)
-{
-  NS_ENSURE_STATE(mCLObjects);
-
-  mCLObjects->mLocationManager.desiredAccuracy =
-    (aEnable ? kHIGH_ACCURACY : kDEFAULT_ACCURACY);
-
-  return NS_OK;
-}
-
-void
-CoreLocationLocationProvider::Update(nsIDOMGeoPosition* aSomewhere)
-{
-  if (aSomewhere && mCallback) {
-    mCallback->Update(aSomewhere);
-  }
-}
-
-void
-CoreLocationLocationProvider::NotifyError(uint16_t aErrorCode)
-{
-  mCallback->NotifyError(aErrorCode);
-}
-
-void
-CoreLocationLocationProvider::CreateMLSFallbackProvider()
-{
-  if (mMLSFallbackProvider) {
-    return;
-  }
-
-  mMLSFallbackProvider = new MLSFallback();
-  mMLSFallbackProvider->Startup(new MLSUpdate(*this));
-}
-
-void
-CoreLocationLocationProvider::CancelMLSFallbackProvider()
-{
-  if (!mMLSFallbackProvider) {
-    return;
-  }
-
-  mMLSFallbackProvider->Shutdown();
-  mMLSFallbackProvider = nullptr;
-}
diff --git a/dom/system/mac/moz.build b/dom/system/mac/moz.build
deleted file mode 100644
index 08b7c2151e..0000000000
--- a/dom/system/mac/moz.build
+++ /dev/null
@@ -1,14 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-SOURCES += ['CoreLocationLocationProvider.mm']
-
-include('/ipc/chromium/chromium-config.mozbuild')
-
-FINAL_LIBRARY = 'xul'
-LOCAL_INCLUDES += [
-    '/dom/geolocation',
-]
-
diff --git a/dom/system/moz.build b/dom/system/moz.build
index bde685e4fc..fb41fd4f2d 100644
--- a/dom/system/moz.build
+++ b/dom/system/moz.build
@@ -7,8 +7,6 @@ toolkit = CONFIG['MOZ_WIDGET_TOOLKIT']
 
 if toolkit == 'windows':
     DIRS += ['windows']
-elif toolkit == 'cocoa':
-    DIRS += ['mac']
 elif toolkit == 'android':
     DIRS += ['android']
 elif toolkit in ('gtk2', 'gtk3'):
diff --git a/dom/xbl/builtin/mac/jar.mn b/dom/xbl/builtin/mac/jar.mn
deleted file mode 100644
index 9f05c2dd6c..0000000000
--- a/dom/xbl/builtin/mac/jar.mn
+++ /dev/null
@@ -1,6 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-toolkit.jar:
-* content/global/platformHTMLBindings.xml   (platformHTMLBindings.xml)
diff --git a/dom/xbl/builtin/mac/moz.build b/dom/xbl/builtin/mac/moz.build
deleted file mode 100644
index 635fa39c99..0000000000
--- a/dom/xbl/builtin/mac/moz.build
+++ /dev/null
@@ -1,6 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-JAR_MANIFESTS += ['jar.mn']
\ No newline at end of file
diff --git a/dom/xbl/builtin/mac/platformHTMLBindings.xml b/dom/xbl/builtin/mac/platformHTMLBindings.xml
deleted file mode 100644
index b705923999..0000000000
--- a/dom/xbl/builtin/mac/platformHTMLBindings.xml
+++ /dev/null
@@ -1,72 +0,0 @@
-<?xml version="1.0"?>
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-
-<bindings id="htmlBindings"
-   xmlns="http://www.mozilla.org/xbl"
-   xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
-
-  <binding id="inputFields" bindToUntrustedContent="true">
-    <handlers>
-      <handler event="keypress" key="c" modifiers="accel" command="cmd_copy"/>
-      <handler event="keypress" key="x" modifiers="accel" command="cmd_cut"/>
-      <handler event="keypress" key="v" modifiers="accel" command="cmd_paste"/>
-      <handler event="keypress" key="z" modifiers="accel" command="cmd_undo"/>
-      <handler event="keypress" key="z" modifiers="accel,shift" command="cmd_redo"/>
-      <handler event="keypress" key="a" modifiers="accel" command="cmd_selectAll"/>
-    </handlers>
-  </binding>
-
-  <binding id="textAreas" bindToUntrustedContent="true">
-    <handlers>
-      <handler event="keypress" key="c" modifiers="accel" command="cmd_copy"/>
-      <handler event="keypress" key="x" modifiers="accel" command="cmd_cut"/>
-      <handler event="keypress" key="v" modifiers="accel" command="cmd_paste"/>
-      <handler event="keypress" key="z" modifiers="accel" command="cmd_undo"/>
-      <handler event="keypress" key="z" modifiers="accel,shift" command="cmd_redo"/>
-      <handler event="keypress" key="a" modifiers="accel" command="cmd_selectAll"/>
-    </handlers>
-  </binding>
-
-  <binding id="browser">
-    <handlers>
-#include ../browser-base.inc
-      <handler event="keypress" keycode="VK_PAGE_UP" command="cmd_scrollPageUp"/>
-      <handler event="keypress" keycode="VK_PAGE_DOWN" command="cmd_scrollPageDown"/>
-      <handler event="keypress" keycode="VK_HOME" command="cmd_scrollTop" /> 
-      <handler event="keypress" keycode="VK_END"  command="cmd_scrollBottom" /> 
-
-      <handler event="keypress" keycode="VK_LEFT" modifiers="alt" command="cmd_moveLeft2" />
-      <handler event="keypress" keycode="VK_RIGHT" modifiers="alt" command="cmd_moveRight2" />
-      <handler event="keypress" keycode="VK_LEFT" modifiers="alt,shift" command="cmd_selectLeft2" />
-      <handler event="keypress" keycode="VK_RIGHT" modifiers="alt,shift" command="cmd_selectRight2" />
-      <handler event="keypress" keycode="VK_LEFT" modifiers="shift" command="cmd_selectLeft" />
-      <handler event="keypress" keycode="VK_RIGHT" modifiers="shift" command="cmd_selectRight" />
-      <handler event="keypress" keycode="VK_UP" modifiers="alt,shift" command="cmd_selectUp2" />
-      <handler event="keypress" keycode="VK_DOWN" modifiers="alt,shift" command="cmd_selectDown2" />
-      <handler event="keypress" keycode="VK_UP" modifiers="shift" command="cmd_selectUp" />
-      <handler event="keypress" keycode="VK_DOWN" modifiers="shift" command="cmd_selectDown" />
-      <handler event="keypress" keycode="VK_UP" modifiers="accel" command="cmd_moveUp2"/>
-      <handler event="keypress" keycode="VK_DOWN" modifiers="accel" command="cmd_moveDown2"/>
-    </handlers>
-  </binding>
-
-  <binding id="editor">
-    <handlers>
-      <handler event="keypress" key=" " modifiers="shift" command="cmd_scrollPageUp" />
-      <handler event="keypress" key=" " command="cmd_scrollPageDown" />
-
-      <handler event="keypress" key="z" command="cmd_undo" modifiers="accel"/>
-      <handler event="keypress" key="z" command="cmd_redo" modifiers="accel,shift" />
-      <handler event="keypress" key="x" command="cmd_cut" modifiers="accel"/>
-      <handler event="keypress" key="c" command="cmd_copy" modifiers="accel"/>
-      <handler event="keypress" key="v" command="cmd_paste" modifiers="accel"/>
-      <handler event="keypress" key="v" command="cmd_pasteNoFormatting" modifiers="accel,shift"/>
-      <handler event="keypress" key="a" command="cmd_selectAll" modifiers="accel"/>
-      <handler event="keypress" key="v" command="cmd_pasteNoFormatting" modifiers="accel,alt,shift"/>
-    </handlers>
-  </binding>
-
-</bindings>
diff --git a/dom/xbl/builtin/moz.build b/dom/xbl/builtin/moz.build
index 23e3285d49..c51001b4c9 100644
--- a/dom/xbl/builtin/moz.build
+++ b/dom/xbl/builtin/moz.build
@@ -5,8 +5,6 @@
 
 if CONFIG['OS_ARCH'] == 'WINNT':
     DIRS += ['win']
-elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    DIRS += ['mac']
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'android':
     DIRS += ['android']
 elif CONFIG['MOZ_WIDGET_TOOLKIT'] in ('gtk2', 'gtk3'):