Remove more dead app list code.

chrome/browser/ui/app_list/start_page_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_
 #define CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 98 matching lines @@
 
   // ProfileDestroyObserver to shutdown the service on exiting. WebContents
   // depends on the profile and needs to be closed before the profile and its
   // keyed service shutdown.
   class ProfileDestroyObserver;
 
   // The WebContentsDelegate implementation for the start page. This allows
   // getUserMedia() request from the web contents.
   class StartPageWebContentsDelegate;
 
-#if defined(OS_CHROMEOS)
   // This class observes the change of audio input device availability and
   // checks if currently the system has valid audio input.
   class AudioStatus;
-#endif
 
   // This class observes network change events and disables/enables voice search
   // based on network connectivity.
   class NetworkChangeObserver;
 
   void LoadContents();
   void UnloadContents();
 
   // Loads the start page URL for |contents_|.
   void LoadStartPageURL();
@@ skipping 34 matching lines @@
 
   bool webui_finished_loading_;
   std::vector<base::Closure> pending_webui_callbacks_;
 
   base::DefaultClock clock_;
   std::unique_ptr<SpeechRecognizer> speech_recognizer_;
   std::unique_ptr<SpeechAuthHelper> speech_auth_helper_;
 
   bool network_available_;
   bool microphone_available_;
-#if defined(OS_CHROMEOS)
   std::unique_ptr<AudioStatus> audio_status_;
-#endif
   std::unique_ptr<NetworkChangeObserver> network_change_observer_;
 
   bool search_engine_is_google_;
   std::unique_ptr<net::URLFetcher> doodle_fetcher_;
   net::BackoffEntry backoff_entry_;
 
   base::WeakPtrFactory<StartPageService> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(StartPageService);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_APP_LIST_START_PAGE_SERVICE_H_