Sync fullscreen element removal with the spec

Source/core/dom/FullscreenElementStack.h

Index: Source/core/dom/FullscreenElementStack.h
diff --git a/Source/core/dom/FullscreenElementStack.h b/Source/core/dom/FullscreenElementStack.h
index 1bcfa0a1d6829550fccb18904c5406118ff3b356..ed370bbbf3969d028dafa8dc1df6ead39e207380 100644
--- a/Source/core/dom/FullscreenElementStack.h
+++ b/Source/core/dom/FullscreenElementStack.h
@@ -82,7 +82,7 @@ public:
     RenderFullScreen* fullScreenRenderer() const { return m_fullScreenRenderer; }
     void fullScreenRendererDestroyed();
 
-    void removeFullScreenElementOfSubtree(Node*, bool amongChildrenOnly = false);
+    void elementRemoved(Element&);
 
     // Mozilla API
     bool webkitIsFullScreen() const { return m_fullScreenElement.get(); }
@@ -113,8 +113,6 @@ private:
     void enqueueErrorEvent(Element&, RequestType);
     void eventQueueTimerFired(Timer<FullscreenElementStack>*);
 
-    void fullScreenElementRemoved();
-
     bool m_areKeysEnabledInFullScreen;
     RefPtrWillBeMember<Element> m_fullScreenElement;
     WillBeHeapVector<std::pair<RefPtrWillBeMember<Element>, RequestType> > m_fullScreenElementStack;