Initial cut at multi-window resize code. There's still some TODOs, but

ui/views/mouse_watcher.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_MOUSE_WATCHER_H_
 #define UI_VIEWS_MOUSE_WATCHER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 22 matching lines @@
   enum MouseEventType {
     // The mouse moved within the window which was current when the MouseWatcher
     // was created.
     MOUSE_MOVE,
     // The mouse moved exited the window which was current when the MouseWatcher
     // was created.
     MOUSE_EXIT
   };
 
   virtual ~MouseWatcherHost();
+
   // Return false when the mouse has moved outside the monitored region.
-  virtual bool Contains(
-      const gfx::Point& screen_point,
-      MouseEventType type) = 0;
+  virtual bool Contains(const gfx::Point& screen_point,
+                        MouseEventType type) = 0;
 };
 
 // MouseWatcher is used to watch mouse movement and notify its listener when the
 // mouse moves outside the bounds of a MouseWatcherHost.
 class VIEWS_EXPORT MouseWatcher {
  public:
   // Creates a new MouseWatcher. The |listener| will be notified when the |host|
   // determines that the mouse has moved outside its monitored region.
   // |host| will be owned by the watcher and deleted upon completion.
   MouseWatcher(MouseWatcherHost* host, MouseWatcherListener* listener);
@@ skipping 32 matching lines @@
 
   // See description above setter.
   int notify_on_exit_time_ms_;
 
   DISALLOW_COPY_AND_ASSIGN(MouseWatcher);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_MOUSE_WATCHER_H_