Remove Chrome Frame code from BrowserAccessibilityManagerWin.

content/browser/accessibility/browser_accessibility_manager_win.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 CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
 #define CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_
 
 #include <oleacc.h>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 62 matching lines @@
 
   // Track the most recent object that has been asked to scroll and
   // post a notification directly on it when it reaches its destination.
   // TODO(dmazzoni): remove once http://crbug.com/113483 is fixed.
   BrowserAccessibilityWin* tracked_scroll_object_;
 
   // A mapping from the Windows-specific unique IDs (unique within the
   // browser process) to renderer ids within this page.
   base::hash_map<long, int32> unique_id_to_renderer_id_map_;
 
-  bool is_chrome_frame_;
-
   // Owned by its parent; OnAccessibleHwndDeleted gets called upon deletion.
   AccessibleHWND* accessible_hwnd_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserAccessibilityManagerWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ACCESSIBILITY_BROWSER_ACCESSIBILITY_MANAGER_WIN_H_