Merge 106401 (part of http://crbug.com/111266) -

Source/WebKit/chromium/public/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 163 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() { }
+
 protected:
     ~WebWidget() { }
 };
 
 } // namespace WebKit
 
 #endif