Reland "Sync requestFullscreen() and exitFullscreen() algorithms with the spec"

third_party/WebKit/Source/web/WebViewImpl.h

 /*
  * Copyright (C) 2010 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 421 matching lines @@
   }
   float FakePageScaleAnimationPageScaleForTesting() const override {
     return fake_page_scale_animation_page_scale_factor_;
   }
   bool FakePageScaleAnimationUseAnchorForTesting() const override {
     return fake_page_scale_animation_use_anchor_;
   }
 
   void EnterFullscreen(LocalFrame&) override;
   void ExitFullscreen(LocalFrame&) override;
-  void FullscreenElementChanged(Element*, Element*) override;
+  void FullscreenElementChanged(Element* from_element,
+                                Element* to_element) override;
 
   // Exposed for the purpose of overriding device metrics.
   void SendResizeEventAndRepaint();
 
   // Exposed for testing purposes.
   bool HasHorizontalScrollbar() override;
   bool HasVerticalScrollbar() override;
 
   // Exposed for tests.
   unsigned NumLinkHighlights() override { return link_highlights_.size(); }
@@ skipping 288 matching lines @@
   Persistent<ResizeViewportAnchor> resize_viewport_anchor_;
 };
 
 // We have no ways to check if the specified WebView is an instance of
 // WebViewImpl because WebViewImpl is the only implementation of WebView.
 DEFINE_TYPE_CASTS(WebViewImpl, WebView, webView, true, true);
 
 }  // namespace blink
 
 #endif