Update the maximize button when size constraints change.

chrome/browser/ui/views/message_center/message_center_frame_view.h

 // Copyright 2013 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 CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_FRAME_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_FRAME_VIEW_H_
 
 #include "ui/views/window/non_client_view.h"
 
 namespace views {
@@ skipping 13 matching lines @@
   // NonClientFrameView overrides:
   virtual gfx::Rect GetBoundsForClientView() const OVERRIDE;
   virtual gfx::Rect GetWindowBoundsForClientBounds(
       const gfx::Rect& client_bounds) const OVERRIDE;
   virtual int NonClientHitTest(const gfx::Point& point) OVERRIDE;
   virtual void GetWindowMask(const gfx::Size& size,
                              gfx::Path* window_mask) OVERRIDE;
   virtual void ResetWindowControls() OVERRIDE;
   virtual void UpdateWindowIcon() OVERRIDE;
   virtual void UpdateWindowTitle() OVERRIDE;
+  virtual void SizeConstraintsChanged() OVERRIDE;
 
   // View overrides:
   virtual gfx::Insets GetInsets() const OVERRIDE;
   virtual const char* GetClassName() const OVERRIDE;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MessageCenterFrameView);
 };
 
 }  // namespace message_center
 
 #endif  // CHROME_BROWSER_UI_VIEWS_MESSAGE_CENTER_MESSAGE_CENTER_FRAME_VIEW_H_