Removes Experimental hotword-always-on feature.

chrome/browser/ui/webui/app_list/start_page_handler.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_WEBUI_APP_LIST_START_PAGE_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_APP_LIST_START_PAGE_HANDLER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/prefs/pref_change_registrar.h"
-#include "chrome/browser/ui/app_list/hotword_background_activity_delegate.h"
 #include "chrome/browser/ui/app_list/recommended_apps_observer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_ui_message_handler.h"
-#include "ui/app_list/speech_ui_model_observer.h"
 
 namespace base {
 class ListValue;
 }
 
 namespace app_list {
 
-class HotwordBackgroundActivityMonitor;
 class RecommendedApps;
 
 // Handler for the app launcher start page.
 class StartPageHandler : public content::WebUIMessageHandler,
                          public content::NotificationObserver,
-                         public HotwordBackgroundActivityDelegate,
                          public RecommendedAppsObserver {
  public:
   StartPageHandler();
   virtual ~StartPageHandler();
 
  private:
   // content::WebUIMessageHandler overrides:
   virtual void RegisterMessages() OVERRIDE;
 
-  // content::NotificationObserver overrides:
+  // Overridden from content::NotificationObserver:
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // HotwordBackgroundActivityDelegate overrides:
-  virtual int GetRenderProcessID() OVERRIDE;
-  virtual void OnHotwordBackgroundActivityChanged() OVERRIDE;
-
   // RecommendedAppsObserver overrdies:
   virtual void OnRecommendedAppsChanged() OVERRIDE;
 
   // Creates a ListValue for the recommended apps and sends it to js side.
   void SendRecommendedApps();
 
 #if defined(OS_CHROMEOS)
   // Returns true if the hotword is enabled.
   bool HotwordEnabled();
 
   // Called when the pref has been changed.
   void OnHotwordEnabledChanged();
 #endif
 
-  // Returns true if the hotword recognizer should run background.
-  bool ShouldRunHotwordBackground();
-
   // JS callbacks.
   void HandleInitialize(const base::ListValue* args);
   void HandleLaunchApp(const base::ListValue* args);
-  void HandleHotwordRecognizerState(const base::ListValue* args);
   void HandleSpeechResult(const base::ListValue* args);
   void HandleSpeechSoundLevel(const base::ListValue* args);
   void HandleSpeechRecognition(const base::ListValue* args);
 
   RecommendedApps* recommended_apps_;  // Not owned.
-  bool has_hotword_recognizer_;
-  scoped_ptr<HotwordBackgroundActivityMonitor> hotword_monitor_;
-  SpeechRecognitionState last_state_;
   PrefChangeRegistrar pref_change_registrar_;
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(StartPageHandler);
 };
 
 }  // namespace app_list
 
 #endif  // CHROME_BROWSER_UI_WEBUI_APP_LIST_START_PAGE_HANDLER_H_