Extension Commands changed by the user now take effect immediately.

chrome/browser/ui/views/browser_action_view.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_VIEWS_BROWSER_ACTION_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_
 #pragma once
 
 #include <string>
 
@@ skipping 80 matching lines @@
 
  protected:
   // Overridden from views::View:
   virtual void ViewHierarchyChanged(bool is_add,
                                     View* parent,
                                     View* child) OVERRIDE;
 
  private:
   virtual ~BrowserActionButton();
 
+  void MaybeRegisterExtensionCommand();
+  void MaybeUnregisterExtensionCommand(bool only_if_active);
+
   // The browser action this view represents. The ExtensionAction is not owned
   // by this class.
   ExtensionAction* browser_action_;
 
   // The extension associated with the browser action we're displaying.
   const extensions::Extension* extension_;
 
   // The object that is waiting for the image loading to complete
   // asynchronously.
   ImageLoadingTracker tracker_;
@@ skipping 50 matching lines @@
   // The container for this view.
   BrowserActionsContainer* panel_;
 
   // The button this view contains.
   BrowserActionButton* button_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_BROWSER_ACTION_VIEW_H_