Split ExtensionSystem interface from ExtensionSystemImpl implementation, part 1.

chrome/browser/ui/webui/app_list/start_page_handler.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/ui/webui/app_list/start_page_handler.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extension_system.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/app_list/app_list_controller_delegate.h"
 #include "chrome/browser/ui/app_list/app_list_service.h"
 #include "chrome/browser/ui/app_list/recommended_apps.h"
 #include "chrome/browser/ui/app_list/start_page_service.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/webui/extensions/extension_icon_source.h"
 #include "chrome/common/extensions/extension_icon_set.h"
 #include "content/public/browser/web_contents_view.h"
 #include "content/public/browser/web_ui.h"
+#include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "ui/app_list/speech_ui_model_observer.h"
 #include "ui/events/event_constants.h"
 
 namespace app_list {
 
 namespace {
 
 scoped_ptr<base::DictionaryValue> CreateAppInfo(
     const extensions::Extension* app) {
@@ skipping 124 matching lines @@
     new_state = SPEECH_RECOGNITION_ON;
   else if (state_string == "in-speech")
     new_state = SPEECH_RECOGNITION_IN_SPEECH;
 
   StartPageService* service =
       StartPageService::Get(Profile::FromWebUI(web_ui()));
   service->OnSpeechRecognitionStateChanged(new_state);
 }
 
 }  // namespace app_list