Backed out changeset db13e1fbc642 (bug 691151) because some in-tree callers are still using the function

content/base/public/nsDeprecatedOperationList.h

@@ -30,4 +30,3 @@ DEPRECATED_OPERATION(PrefixedVisibilityAPI)
 DEPRECATED_OPERATION(NodeIteratorDetach)
 DEPRECATED_OPERATION(MozAudioData)
 DEPRECATED_OPERATION(LenientThis)
-DEPRECATED_OPERATION(GetPreventDefault)

content/events/src/nsDOMEvent.cpp

@@ -1220,17 +1220,6 @@ const char* nsDOMEvent::GetEventName(uint32_t aEventType)
   return nullptr;
 }
 
-bool
-nsDOMEvent::GetPreventDefault() const
-{
-  if (mOwner) {
-    if (nsIDocument* doc = mOwner->GetExtantDoc()) {
-      doc->WarnOnceAbout(nsIDocument::eGetPreventDefault);
-    }
-  }
-  return DefaultPrevented();
-}
-
 NS_IMETHODIMP
 nsDOMEvent::GetPreventDefault(bool* aReturn)
 {

content/events/src/nsDOMEvent.h

@@ -189,7 +189,10 @@ public:
   mozilla::dom::EventTarget* GetOriginalTarget() const;
   mozilla::dom::EventTarget* GetExplicitOriginalTarget() const;
 
-  bool GetPreventDefault() const;
+  bool GetPreventDefault() const
+  {
+    return DefaultPrevented();
+  }
 
 protected:
 

dom/locales/en-US/chrome/dom/dom.properties

@@ -130,5 +130,3 @@ MozAudioDataWarning=The Mozilla Audio Data API is deprecated.  Please use the We
 LenientThisWarning=Ignoring get or set of property that has [LenientThis] because the "this" object is incorrect.
 # LOCALIZATION NOTE: Do not translate "nsIDOMWindowUtils", "getWindowWithOuterId", or "nsIWindowMediator"
 GetWindowWithOuterIdWarning=Use of nsIDOMWindowUtils.getOuterWindowWithId() is deprecated.  Instead, use the nsIWindowMediator method of the same name.
-# LOCALIZATION NOTE: Do not translate "getPreventDefault" or "defaultPrevented".
-GetPreventDefaultWarning=Use of getPreventDefault() is deprecated.  Use defaultPrevented instead.