Add a button to exit managed mode.

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 1133 matching lines @@
   // Updates commands that affect the bookmark bar.
   void UpdateCommandsForBookmarkBar();
 
   // Set the preference that indicates that the home page has been changed.
   void MarkHomePageAsChanged(PrefService* pref_service);
 
   // Update commands whose state depends on whether the window is in fullscreen
   // mode.
   void UpdateCommandsForFullscreenMode(bool is_fullscreen);
 
+  // Update commands whose state depends on whether multiple profiles are
+  // allowed.
+  void UpdateCommandsForMultipleProfiles();
+
   // Updates the printing command state.
   void UpdatePrintingState(int content_restrictions);
 
   // Updates the save-page-as command state.
   void UpdateSaveAsState(int content_restrictions);
 
   // Updates the open-file state (Mac Only).
   void UpdateOpenFileState();
 
   // Ask the Reload/Stop button to change its icon, and update the Stop command
@@ skipping 322 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_