Clean up around methods to enter/exit fullscreen

third_party/WebKit/public/web/WebFrameClient.h

 /*
  * 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 636 matching lines @@
     virtual bool isControlledByServiceWorker(WebDataSource&) { return false; }
 
     // Returns an identifier of the service worker controlling the document
     // associated with the WebDataSource.
     virtual int64_t serviceWorkerID(WebDataSource&) { return -1; }
 
 
     // Fullscreen ----------------------------------------------------------
 
     // Called to enter/exit fullscreen mode.
-    // After calling enterFullscreen, WebWidget::{will,Did}EnterFullScreen
-    // should bound resizing the WebWidget into fullscreen mode.
-    // Similarly, when exitFullScreen is called,
-    // WebWidget::{will,Did}ExitFullScreen should bound resizing the WebWidget
-    // out of fullscreen mode.
-    // Note: the return value is ignored.
-    virtual bool enterFullscreen() { return false; }
-    virtual bool exitFullscreen() { return false; }
+    // After calling enterFullscreen or exitFullscreen,
+    // WebWidget::didEnterFullscreen or WebWidget::didExitFullscreen
+    // respectively will be called once the fullscreen mode has changed.
+    virtual void enterFullscreen() { }
+    virtual void exitFullscreen() { }
 
 
     // Sudden termination --------------------------------------------------
 
     // Called when elements preventing the sudden termination of the frame
     // become present or stop being present. |type| is the type of element
     // (BeforeUnload handler, Unload handler).
     enum SuddenTerminationDisablerType {
         BeforeUnloadHandler,
         UnloadHandler,
@@ skipping 52 matching lines @@
         return WebPageVisibilityStateVisible;
     }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif