Remove rootWindowRect from WebWidgetClient and move it to WebViewClient.

third_party/WebKit/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 83 matching lines @@
     // 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(); }
 
-    // Called to get the position of the root window containing the widget
-    // in screen coordinates.
-    virtual WebRect rootWindowRect() { return WebRect(); }
-
     // Called to query information about the screen where this widget is
     // displayed.
     virtual WebScreenInfo screenInfo() { return WebScreenInfo(); }
 
     // When this method gets called, WebWidgetClient implementation should
     // reset the input method by cancelling any ongoing composition.
     virtual void resetInputMethod() { }
 
     // Requests to lock the mouse cursor. If true is returned, the success
     // result will be asynchronously returned via a single call to
@@ skipping 70 matching lines @@
     // migration is completed.
     virtual void convertWindowToViewport(WebFloatRect* rect) {}
 
 protected:
     ~WebWidgetClient() { }
 };
 
 } // namespace blink
 
 #endif