Remove obsolete chromeos specific code

chrome/browser/ui/browser_window.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 CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #define CHROME_BROWSER_UI_BROWSER_WINDOW_H_
 #pragma once
 
 #include "base/callback_forward.h"
 #include "chrome/browser/ui/base_window.h"
@@ skipping 140 matching lines @@
   virtual void FocusToolbar() = 0;
 
   // Focuses the app menu like it was a menu bar.
   //
   // Not used on the Mac, which has a "normal" menu bar.
   virtual void FocusAppMenu() = 0;
 
   // Focuses the bookmarks toolbar (for accessibility).
   virtual void FocusBookmarksToolbar() = 0;
 
-  // Focuses the Chrome OS status view (for accessibility).
-  virtual void FocusChromeOSStatus() = 0;
-
   // Moves keyboard focus to the next pane.
   virtual void RotatePaneFocus(bool forwards) = 0;
 
   // Returns whether the bookmark bar is visible or not.
   virtual bool IsBookmarkBarVisible() const = 0;
 
   // Returns whether the bookmark bar is animating or not.
   virtual bool IsBookmarkBarAnimating() const = 0;
 
   // Returns whether the tab strip is editable (for extensions).
@@ skipping 225 matching lines @@
 
   // Returns the ToolbarView.
   virtual ToolbarView* GetToolbarView() const = 0;
 #endif
 
  protected:
   virtual ~BrowserWindowTesting() {}
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_WINDOW_H_