Refactor overlay fullscreen video handling into a single callback

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2063 matching lines @@
 }
 
 void WebViewImpl::enterFullscreenForElement(Element* element) {
   m_fullscreenController->enterFullscreenForElement(element);
 }
 
 void WebViewImpl::exitFullscreen(LocalFrame* frame) {
   m_fullscreenController->exitFullscreen(frame);
 }
 
+void WebViewImpl::fullscreenElementChanged(Element* fromElement,
+                                           Element* toElement) {
+  m_fullscreenController->fullscreenElementChanged(fromElement, toElement);
+}
+
 bool WebViewImpl::hasHorizontalScrollbar() {
   return mainFrameImpl()
       ->frameView()
       ->layoutViewportScrollableArea()
       ->horizontalScrollbar();
 }
 
 bool WebViewImpl::hasVerticalScrollbar() {
   return mainFrameImpl()
       ->frameView()
@@ skipping 2102 matching lines @@
   if (focusedFrame->localFrameRoot() != mainFrameImpl()->frame())
     return nullptr;
   return focusedFrame;
 }
 
 LocalFrame* WebViewImpl::focusedLocalFrameAvailableForIme() const {
   return m_imeAcceptEvents ? focusedLocalFrameInWidget() : nullptr;
 }
 
 }  // namespace blink