Adds HotwordPrivate API for integrating the hotword feature to AppLauncher

chrome/browser/search/hotword_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_SEARCH_HOTWORD_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_HOTWORD_SERVICE_H_
 
 #include "base/basictypes.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class ExtensionService;
+class HotwordClient;
 class Profile;
 
 namespace hotword_internal {
 // Constants for the hotword field trial.
 extern const char kHotwordFieldTrialName[];
 extern const char kHotwordFieldTrialDisabledGroupName[];
 }  // namespace hotword_internal
 
 // Provides an interface for the Hotword component that does voice triggered
 // search.
@@ skipping 40 matching lines @@
   virtual bool RetryHotwordExtension();
 
   // Control the state of the hotword extension.
   void EnableHotwordExtension(ExtensionService* extension_service);
   void DisableHotwordExtension(ExtensionService* extension_service);
 
   // Handles enabling/disabling the hotword extension when the user
   // turns it off via the settings menu.
   void OnHotwordSearchEnabledChanged(const std::string& pref_name);
 
+  // Called to handle the hotword session from |client|.
+  void RequestHotwordSession(HotwordClient* client);
+  void StopHotwordSession(HotwordClient* client);
+  HotwordClient* client() { return client_; }
+
  private:
   Profile* profile_;
 
   PrefChangeRegistrar pref_registrar_;
 
   content::NotificationRegistrar registrar_;
 
+  HotwordClient* client_;
+
   DISALLOW_COPY_AND_ASSIGN(HotwordService);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_HOTWORD_SERVICE_H_