Removes Experimental hotword-always-on feature.

chrome/browser/ui/app_list/hotword_background_activity_monitor.h

Index: chrome/browser/ui/app_list/hotword_background_activity_monitor.h
diff --git a/chrome/browser/ui/app_list/hotword_background_activity_monitor.h b/chrome/browser/ui/app_list/hotword_background_activity_monitor.h
deleted file mode 100644
index 6a02d1c62d91d17346759d27a2f45807dc28d5f1..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/hotword_background_activity_monitor.h
+++ /dev/null
@@ -1,104 +0,0 @@
-// Copyright 2014 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_HOTWORD_BACKGROUND_ACTIVITY_MONITOR_H_
-#define CHROME_BROWSER_UI_APP_LIST_HOTWORD_BACKGROUND_ACTIVITY_MONITOR_H_
-
-#include <set>
-
-#include "base/basictypes.h"
-#include "base/observer_list.h"
-#include "chrome/browser/media/media_capture_devices_dispatcher.h"
-#include "chrome/browser/ui/browser_list_observer.h"
-#include "chrome/browser/ui/tabs/tab_strip_model_observer.h"
-
-#if defined(USE_ASH)
-#include "ash/shell_observer.h"
-#endif
-
-#if defined(OS_CHROMEOS)
-namespace chromeos {
-class IdleDetector;
-}
-#endif
-
-namespace app_list {
-
-class HotwordBackgroundActivityDelegate;
-
-// A monitor to check the user activity and reports the availability of
-// background hotword recognizer. Otherwise, the background hotword recognizer
-// may conflict with foreground browser activity like voice search in
-// Google homepage.
-class HotwordBackgroundActivityMonitor
-    : public chrome::BrowserListObserver,
-      public TabStripModelObserver,
-#if defined(USE_ASH)
-      public ash::ShellObserver,
-#endif
-      public MediaCaptureDevicesDispatcher::Observer {
- public:
-  explicit HotwordBackgroundActivityMonitor(
-      HotwordBackgroundActivityDelegate* delegate);
-  virtual ~HotwordBackgroundActivityMonitor();
-
-  bool IsHotwordBackgroundActive();
-
- private:
-  friend class HotwordBackgroundActivityMonitorTest;
-
-  // chrome::BrowserListObserver overrides:
-  virtual void OnBrowserAdded(Browser* browser) OVERRIDE;
-  virtual void OnBrowserRemoved(Browser* browser) OVERRIDE;
-
-  // TabStripModelObserver overrides:
-  virtual void TabClosingAt(
-      TabStripModel* tab_strip_model,
-      content::WebContents* contents,
-      int index) OVERRIDE;
-  virtual void TabChangedAt(
-      content::WebContents* contents,
-      int index,
-      TabStripModelObserver::TabChangeType change_type) OVERRIDE;
-
-#if defined(USE_ASH)
-  // ash::ShellObserver overrides:
-  virtual void OnLockStateChanged(bool locked) OVERRIDE;
-#endif
-
-  // MediaCaptureDevicesDispatcher::Observer overrides:
-  virtual void OnRequestUpdate(
-      int render_process_id,
-      int render_view_id,
-      const content::MediaStreamDevice& device,
-      const content::MediaRequestState state) OVERRIDE;
-
-  // Called when the idle state changed.
-  void OnIdleStateChanged(bool is_idle);
-
-  void NotifyActivityChange();
-
-  // Adds/Removes WebContents for the whitelist of tab-recording for testing.
-  void AddWebContentsToWhitelistForTest(
-      content::WebContents* contents);
-  void RemoveWebContentsFromWhitelistForTest(
-      content::WebContents* contents);
-
-  HotwordBackgroundActivityDelegate* delegate_;
-
-  bool locked_;
-  bool is_idle_;
-  std::set<int> recording_renderer_ids_;
-  std::set<content::WebContents*> recording_contents_for_test_;
-
-#if defined(OS_CHROMEOS)
-  scoped_ptr<chromeos::IdleDetector> idle_detector_;
-#endif
-
-  DISALLOW_COPY_AND_ASSIGN(HotwordBackgroundActivityMonitor);
-};
-
-}  // namespace app_list
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_HOTWORD_BACKGROUND_ACTIVITY_MONITOR_H_