Remove temporary code in FullscreenController and WebWidgetClient.

public/web/WebWidgetClient.h

 /*
  * Copyright (C) 2009 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 93 matching lines @@
     // be called asynchronously as a result of this notification.
     virtual void closeWidgetSoon() { }
 
     // Called to show the widget according to the given policy.
     virtual void show(WebNavigationPolicy) { }
 
     // Called to block execution of the current thread until the widget is
     // closed.
     virtual void runModal() { }
 
-    // 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.
-    virtual bool enterFullScreen() { return false; }
-    virtual void exitFullScreen() { }
-
     // Called to get/set the position of the widget in screen coordinates.
     virtual WebRect windowRect() { return WebRect(); }
     virtual void setWindowRect(const WebRect&) { }
 
     // Called when a tooltip should be shown at the current cursor position.
     virtual void setToolTipText(const WebString&, WebTextDirection hint) { }
 
     // Called to get the position of the resizer rect in window coordinates.
     virtual WebRect windowResizerRect() { return WebRect(); }
 
@@ skipping 44 matching lines @@
     // Request the browser to show the IME for current input type.
     virtual void showImeIfNeeded() { }
 
 protected:
     ~WebWidgetClient() { }
 };
 
 } // namespace blink
 
 #endif