Removes Experimental hotword-always-on feature.

chrome/browser/ui/app_list/hotword_background_activity_delegate.h

Index: chrome/browser/ui/app_list/hotword_background_activity_delegate.h
diff --git a/chrome/browser/ui/app_list/hotword_background_activity_delegate.h b/chrome/browser/ui/app_list/hotword_background_activity_delegate.h
deleted file mode 100644
index 5190e87a6927e7ddabdd65890314a4635fce51ec..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/app_list/hotword_background_activity_delegate.h
+++ /dev/null
@@ -1,26 +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_DELEGATE_H_
-#define CHROME_BROWSER_UI_APP_LIST_HOTWORD_BACKGROUND_ACTIVITY_DELEGATE_H_
-
-namespace app_list {
-
-// Delegate for HotwordBackgroundActivityMonitor.
-class HotwordBackgroundActivityDelegate {
- public:
-  virtual ~HotwordBackgroundActivityDelegate() {}
-
-  // Returns the render process ID for the hotword recognizer of the delegate.
-  // The value is used to check if the media request comes from its own render
-  // process.
-  virtual int GetRenderProcessID() = 0;
-
-  // Called when the background hotword recognizer's availablility has changed.
-  virtual void OnHotwordBackgroundActivityChanged() = 0;
-};
-
-}  // namespace app_list
-
-#endif  // CHROME_BROWSER_UI_APP_LIST_HOTWORD_BACKGROUND_ACTIVITY_DELEGATE_H_