Implement the unprefixed the Fullscreen API

Source/core/dom/FullscreenElementStack.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
@@ skipping 41 matching lines @@
     virtual ~FullscreenElementStack();
     static const char* supplementName();
     static FullscreenElementStack& from(Document&);
     static FullscreenElementStack* fromIfExists(Document&);
     static Element* fullscreenElementFrom(Document&);
     static Element* currentFullScreenElementFrom(Document&);
     static bool isFullScreen(Document&);
     static bool isActiveFullScreenElement(const Element&);
 
     enum RequestType {
+        UnprefixedRequest, // Element.requestFullscreen()
         PrefixedRequest, // Element.webkitRequestFullscreen()
         PrefixedMozillaRequest, // Element.webkitRequestFullScreen()
         PrefixedMozillaAllowKeyboardInputRequest, // Element.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT)
         PrefixedVideoRequest, // HTMLVideoElement.webkitEnterFullscreen() and webkitEnterFullScreen()
     };
 
     void requestFullscreen(Element&, RequestType);
     void fullyExitFullscreen();
     void exitFullscreen();
 
     static bool fullscreenEnabled(Document&);
-    Element* fullscreenElement() const { return !m_fullScreenElementStack.isEmpty() ? m_fullScreenElementStack.last().get() : 0; }
+    Element* fullscreenElement() const { return !m_fullScreenElementStack.isEmpty() ? m_fullScreenElementStack.last().first.get() : 0; }
 
     void willEnterFullScreenForElement(Element*);
     void didEnterFullScreenForElement(Element*);
     void willExitFullScreenForElement(Element*);
     void didExitFullScreenForElement(Element*);
 
     void setFullScreenRenderer(RenderFullScreen*);
     RenderFullScreen* fullScreenRenderer() const { return m_fullScreenRenderer; }
     void fullScreenRendererDestroyed();
 
@@ skipping 13 matching lines @@
 
 private:
     static FullscreenElementStack* fromIfExistsSlow(Document&);
 
     explicit FullscreenElementStack(Document&);
 
     Document* document();
 
     void clearFullscreenElementStack();
     void popFullscreenElementStack();
-    void pushFullscreenElementStack(Element&);
+    void pushFullscreenElementStack(Element&, RequestType);
 
-    void enqueueChangeEvent(Document&);
-    void enqueueErrorEvent(Element&);
+    void enqueueChangeEvent(Document&, RequestType);
+    void enqueueErrorEvent(Element&, RequestType);
     void eventQueueTimerFired(Timer<FullscreenElementStack>*);
 
     void fullScreenElementRemoved();
 
     bool m_areKeysEnabledInFullScreen;
     RefPtrWillBeMember<Element> m_fullScreenElement;
-    WillBeHeapVector<RefPtrWillBeMember<Element> > m_fullScreenElementStack;
+    WillBeHeapVector<std::pair<RefPtrWillBeMember<Element>, RequestType> > m_fullScreenElementStack;
     RawPtrWillBeMember<RenderFullScreen> m_fullScreenRenderer;
     Timer<FullscreenElementStack> m_eventQueueTimer;
     WillBeHeapDeque<RefPtrWillBeMember<Event> > m_eventQueue;
     LayoutRect m_savedPlaceholderFrameRect;
     RefPtr<RenderStyle> m_savedPlaceholderRenderStyle;
 };
 
 inline bool FullscreenElementStack::isActiveFullScreenElement(const Element& element)
 {
     FullscreenElementStack* fullscreen = fromIfExists(element.document());
     if (!fullscreen)
         return false;
     return fullscreen->webkitCurrentFullScreenElement() == &element;
 }
 
 inline FullscreenElementStack* FullscreenElementStack::fromIfExists(Document& document)
 {
     if (!document.hasFullscreenElementStack())
         return 0;
     return fromIfExistsSlow(document);
 }
 
 } // namespace blink
 
 #endif // FullscreenElementStack_h