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

Source/WebKit/chromium/public/WebWidget.h

Index: Source/WebKit/chromium/public/WebWidget.h
===================================================================
--- Source/WebKit/chromium/public/WebWidget.h	(revision 107429)
+++ Source/WebKit/chromium/public/WebWidget.h	(working copy)
@@ -181,6 +181,12 @@
     // 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() { }
 };