Revert of MediaPerceptionPrivate API impl and testing.

chromeos/dbus/dbus_thread_manager.h

 // Copyright (c) 2012 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 CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
 #define CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 182 matching lines @@
   void SetShillThirdPartyVpnDriverClient(
       std::unique_ptr<ShillThirdPartyVpnDriverClient> client);
   void SetImageBurnerClient(std::unique_ptr<ImageBurnerClient> client);
   void SetImageLoaderClient(std::unique_ptr<ImageLoaderClient> client);
   void SetMediaAnalyticsClient(std::unique_ptr<MediaAnalyticsClient> client);
   void SetPermissionBrokerClient(
       std::unique_ptr<PermissionBrokerClient> client);
   void SetPowerManagerClient(std::unique_ptr<PowerManagerClient> client);
   void SetSessionManagerClient(std::unique_ptr<SessionManagerClient> client);
   void SetUpdateEngineClient(std::unique_ptr<UpdateEngineClient> client);
-  void SetUpstartClient(std::unique_ptr<UpstartClient> client);
 
  private:
   friend class DBusThreadManager;
 
   DBusThreadManagerSetter();
 
   DISALLOW_COPY_AND_ASSIGN(DBusThreadManagerSetter);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_DBUS_THREAD_MANAGER_H_