Add a new resizer corner overlay.

chrome/renderer/render_widget.cc

Index: chrome/renderer/render_widget.cc
===================================================================
--- chrome/renderer/render_widget.cc	(revision 9328)
+++ chrome/renderer/render_widget.cc	(working copy)
@@ -229,11 +229,15 @@
   }
 }
 
-void RenderWidget::OnResize(const gfx::Size& new_size) {
+void RenderWidget::OnResize(const gfx::Size& new_size,
+                            const gfx::Rect& resizer_rect) {
   // During shutdown we can just ignore this message.
   if (!webwidget_)
     return;
 
+  // Remember the rect where the resize corner will be drawn.
+  resizer_rect_ = resizer_rect;
+
   // TODO(darin): We should not need to reset this here.
   is_hidden_ = false;
   needs_repainting_on_restore_ = false;
@@ -694,8 +698,7 @@
 
 void RenderWidget::GetRootWindowResizerRect(WebWidget* webwidget,
                                             gfx::Rect* rect) {
-  Send(new ViewHostMsg_GetRootWindowResizerRect(routing_id_, host_window_,
-                                                rect));
+  *rect = resizer_rect_;
 }
 
 void RenderWidget::OnImeSetInputMode(bool is_active) {