Remove temporary code in FullscreenController and WebWidgetClient.

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 584 matching lines @@
 
 
     // Speech --------------------------------------------------------------
 
     // Access the embedder API for speech recognition services.
     virtual WebSpeechRecognizer* speechRecognizer() { return 0; }
 
 
     // Fullscreen ----------------------------------------------------------
 
-    // Called to enter/exit fullscreen mode. If enterFullScreen returns true,
-    // then 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.
+    // 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; }
 
 protected:
     virtual ~WebFrameClient() { }
 };
 
 } // namespace blink
 
 #endif