Remove obsolete chromeos specific code

chrome/browser/ui/browser.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_H_
 #define CHROME_BROWSER_UI_BROWSER_H_
 #pragma once
 
 #include <map>
 #include <set>
@@ skipping 614 matching lines @@
 
   // Zoom
   void Zoom(content::PageZoom zoom);
 
   // Focus various bits of UI
   void FocusToolbar();
   void FocusLocationBar();  // Also selects any existing text.
   void FocusSearch();
   void FocusAppMenu();
   void FocusBookmarksToolbar();
-  void FocusChromeOSStatus();
   void FocusNextPane();
   void FocusPreviousPane();
 
   // Show various bits of UI
   void OpenFile();
   void OpenCreateShortcutsDialog();
   void ToggleDevToolsWindow(DevToolsToggleAction action);
   void OpenTaskManager(bool highlight_background_resources);
   void OpenFeedbackDialog();
 
@@ skipping 865 matching lines @@
   bool window_has_shown_;
 
   // Currently open color chooser. Non-NULL after OpenColorChooser is called and
   // before DidEndColorChooser is called.
   scoped_ptr<content::ColorChooser> color_chooser_;
 
   DISALLOW_COPY_AND_ASSIGN(Browser);
 };
 
 #endif  // CHROME_BROWSER_UI_BROWSER_H_