Update window region after widget resizes not changing HWND size

ui/views/win/hwnd_message_handler.h

Index: ui/views/win/hwnd_message_handler.h
diff --git a/ui/views/win/hwnd_message_handler.h b/ui/views/win/hwnd_message_handler.h
index 24cd8fda66d53212e1cfbabe45a1a21ee0c17c0b..5805e62b3f3c3eff37b9e7ec0138b55b8e174fa5 100644
--- a/ui/views/win/hwnd_message_handler.h
+++ b/ui/views/win/hwnd_message_handler.h
@@ -190,6 +190,11 @@ class VIEWS_EXPORT HWNDMessageHandler :
   void SetWindowIcons(const gfx::ImageSkia& window_icon,
                       const gfx::ImageSkia& app_icon);
 
+  // Forces message handler to think a resize has happened. Useful when
+  // SetBounds() does not really change the size, but we want to force updates
+  // needed after a resize.
+  void ForceWindowResized();
+
   void set_remove_standard_frame(bool remove_standard_frame) {
     remove_standard_frame_ = remove_standard_frame;
   }