Get rid of the EnableClose() infrastructure in Widget.

chrome/browser/chromeos/frame/bubble_frame_view.h

 // Copyright (c) 2011 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_CHROMEOS_FRAME_BUBBLE_FRAME_VIEW_H_
 #define CHROME_BROWSER_CHROMEOS_FRAME_BUBBLE_FRAME_VIEW_H_
 #pragma once
 
 #include "chrome/browser/chromeos/frame/bubble_window.h"
 #include "ui/views/window/non_client_view.h"
@@ skipping 25 matching lines @@
                   DialogStyle style);
   virtual ~BubbleFrameView();
 
   // Overridden from views::NonClientFrameView:
   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 EnableClose(bool enable) OVERRIDE;
   virtual void ResetWindowControls() OVERRIDE;
   virtual void UpdateWindowIcon() OVERRIDE;
 
   // View overrides:
   virtual gfx::Insets GetInsets() const OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
   virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
 
   // Overridden from views::ButtonListener:
@@ skipping 21 matching lines @@
 
   // Throbber is optional. Employed by STYLE_THROBBER.
   views::Throbber* throbber_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleFrameView);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_FRAME_BUBBLE_FRAME_VIEW_H_