Extension Commands changed by the user now take effect immediately.

chrome/browser/ui/views/extensions/extension_keybinding_registry_views.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_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_VIEWS_H_
 #define CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_VIEWS_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 26 matching lines @@
                                    views::FocusManager* focus_manager);
   virtual ~ExtensionKeybindingRegistryViews();
 
   // Overridden from ui::AcceleratorTarget.
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
   virtual bool CanHandleAccelerators() const OVERRIDE;
 
  private:
   // Overridden from ExtensionKeybindingRegistry:
   virtual void AddExtensionKeybinding(
-      const extensions::Extension* extension) OVERRIDE;
+      const extensions::Extension* extension,
+      const std::string& command_name) OVERRIDE;
   virtual void RemoveExtensionKeybinding(
-      const extensions::Extension* extension) OVERRIDE;
+      const extensions::Extension* extension,
+      const std::string& command_name) OVERRIDE;
 
   // Weak pointer to the our profile. Not owned by us.
   Profile* profile_;
 
   // Weak pointer back to the focus manager to use to register and unregister
   // accelerators with. Not owned by us.
   views::FocusManager* focus_manager_;
 
   // Maps an accelerator to a string pair (extension id, command name) for
   // commands that have been registered. Unlike its GTK counterpart, this map
   // contains no registration for pageAction and browserAction commands.
   typedef std::map< ui::Accelerator,
                     std::pair<std::string, std::string> > EventTargets;
   EventTargets event_targets_;
 
   // The content notification registrar for listening to extension events.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionKeybindingRegistryViews);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_EXTENSIONS_EXTENSION_KEYBINDING_REGISTRY_VIEWS_H_