2 files changed, 10 insertions, 0 deletions
diff --git a/dom/html/HTMLInputElement.h b/dom/html/HTMLInputElement.h
index 2321b7338e..adab663c37 100644
--- a/dom/html/HTMLInputElement.h
+++ b/dom/html/HTMLInputElement.h
@@ -800,6 +800,8 @@ public:
    * The following are called from datetime input box binding to get the
    * corresponding computed values.
    */
+  double GetStepAsDouble() { return GetStep().toDouble(); }
+  double GetStepBaseAsDouble() { return GetStepBase().toDouble(); }
   double GetMinimumAsDouble() { return GetMinimum().toDouble(); }
   double GetMaximumAsDouble() { return GetMaximum().toDouble(); }
 
diff --git a/dom/webidl/HTMLInputElement.webidl b/dom/webidl/HTMLInputElement.webidl
index c551d96ab6..cf3e9a4c71 100644
--- a/dom/webidl/HTMLInputElement.webidl
+++ b/dom/webidl/HTMLInputElement.webidl
@@ -269,4 +269,12 @@ partial interface HTMLInputElement {
 
   [Pref="dom.forms.datetime", Func="IsChromeOrXBL"]
   void closeDateTimePicker();
+
+  [Pref="dom.forms.datetime", Func="IsChromeOrXBL",
+   BinaryName="getStepAsDouble"]
+  double getStep();
+
+  [Pref="dom.forms.datetime", Func="IsChromeOrXBL",
+   BinaryName="getStepBaseAsDouble"]
+  double getStepBase();
 };