Bug 1117264 - Mark virtual overridden functions as MOZ_OVERRIDE in dom/base code; r=baku

dom/base/nsFrameMessageManager.cpp

@@ -1855,7 +1855,7 @@ public:
                                   const nsAString& aMessage,
                                   const mozilla::dom::StructuredCloneData& aData,
                                   JS::Handle<JSObject *> aCpows,
-                                  nsIPrincipal* aPrincipal)
+                                  nsIPrincipal* aPrincipal) MOZ_OVERRIDE
   {
     if (!nsFrameMessageManager::sPendingSameProcessAsyncMessages) {
       nsFrameMessageManager::sPendingSameProcessAsyncMessages = new nsTArray<nsCOMPtr<nsIRunnable> >;