Remove grow box rect support, renderer part.

third_party/WebKit/public/web/WebWidget.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 217 matching lines @@
   // Calling WebWidgetClient::requestPointerLock() will result in one
   // return call to didAcquirePointerLock() or didNotAcquirePointerLock().
   virtual void didAcquirePointerLock() {}
   virtual void didNotAcquirePointerLock() {}
 
   // Pointer lock was held, but has been lost. This may be due to a
   // request via WebWidgetClient::requestPointerUnlock(), or for other
   // reasons such as the user exiting lock, window focus changing, etc.
   virtual void didLosePointerLock() {}
 
-  // Informs the WebWidget that the resizer rect changed. Happens for example
-  // on mac, when a widget appears below the WebWidget without changing the
-  // WebWidget's size (WebWidget::resize() automatically checks the resizer
-  // rect.)
-  virtual void didChangeWindowResizerRect() {}
-
   // The page background color. Can be used for filling in areas without
   // content.
   virtual WebColor backgroundColor() const {
     return 0xFFFFFFFF; /* SK_ColorWHITE */
   }
 
   // The currently open page popup, which are calendar and datalist pickers
   // but not the select popup.
   virtual WebPagePopup* pagePopup() const { return 0; }
 
@@ skipping 14 matching lines @@
   // replaced.
   virtual void applyReplacementRange(const WebRange&) {}
 
  protected:
   ~WebWidget() {}
 };
 
 }  // namespace blink
 
 #endif