Drive extension functions from ExtensionFunction::Run. The

chrome/browser/extensions/api/app_window/app_window_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_APP_WINDOW_APP_WINDOW_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_APP_WINDOW_APP_WINDOW_API_H_
 
 #include "apps/app_window.h"
 #include "extensions/browser/extension_function.h"
 
 namespace extensions {
 
 namespace api {
 namespace app_window {
 struct CreateWindowOptions;
 }
 }
 
-class AppWindowCreateFunction : public UIThreadExtensionFunction {
+class AppWindowCreateFunction : public AsyncExtensionFunction {
  public:
   AppWindowCreateFunction();
   DECLARE_EXTENSION_FUNCTION("app.window.create", APP_WINDOW_CREATE)
 
   void SendDelayedResponse();
 
  protected:
   virtual ~AppWindowCreateFunction() {}
-  virtual bool RunImpl() OVERRIDE;
+  virtual bool RunAsync() OVERRIDE;
 
  private:
   bool GetBoundsSpec(
       const extensions::api::app_window::CreateWindowOptions& options,
       apps::AppWindow::CreateParams* params,
       std::string* error);
 
   apps::AppWindow::Frame GetFrameFromString(const std::string& frame_string);
   bool GetFrameOptions(
       const extensions::api::app_window::CreateWindowOptions& options,
       apps::AppWindow::CreateParams* create_params);
   void UpdateFrameOptionsForChannel(
       apps::AppWindow::CreateParams* create_params);
 
   bool inject_html_titlebar_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_APP_WINDOW_APP_WINDOW_API_H_