Drive extension functions from ExtensionFunction::Run. The

chrome/browser/extensions/api/extension_action/extension_action_api.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_EXTENSIONS_API_EXTENSION_ACTION_EXTENSION_ACTION_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_EXTENSION_ACTION_EXTENSION_ACTION_API_H_
 
 #include <string>
 
 #include "base/memory/weak_ptr.h"
@@ skipping 333 matching lines @@
                                        public content::NotificationObserver {
  public:
   DECLARE_EXTENSION_FUNCTION("browserAction.openPopup",
                              BROWSERACTION_OPEN_POPUP)
   BrowserActionOpenPopupFunction();
 
  private:
   virtual ~BrowserActionOpenPopupFunction() {}
 
   // ExtensionFunction:
-  virtual bool RunImpl() OVERRIDE;
+  virtual bool RunAsync() OVERRIDE;
 
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
   void OpenPopupTimedOut();
 
   content::NotificationRegistrar registrar_;
   bool response_sent_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionOpenPopupFunction);
@@ skipping 94 matching lines @@
                              PAGEACTIONS_DISABLEFORTAB)
 
  protected:
   virtual ~DisablePageActionsFunction() {}
 
   // ExtensionFunction:
   virtual bool RunSync() OVERRIDE;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_EXTENSION_ACTION_EXTENSION_ACTION_API_H_