Handle titlebar text updates properly

ash/wm/custom_frame_view_ash.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 ASH_WM_CUSTOM_FRAME_VIEW_ASH_H_
 #define ASH_WM_CUSTOM_FRAME_VIEW_ASH_H_
 
 #include "ash/ash_export.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/views/controls/button/button.h"  // ButtonListener
@@ skipping 45 matching lines @@
 
   // views::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;
 
   // views::View overrides:
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual std::string GetClassName() const OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual gfx::Size GetMinimumSize() OVERRIDE;
 
   // views::ButtonListener overrides:
   virtual void ButtonPressed(views::Button* sender,
@@ skipping 11 matching lines @@
   views::ImageButton* window_icon_;
 
   scoped_ptr<FramePainter> frame_painter_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomFrameViewAsh);
 };
 
 }  // namespace ash
 
 #endif  // ASH_WM_CUSTOM_FRAME_VIEW_ASH_H_