Replace more ObserverList with base::ObserverList.

chromeos/dbus/fake_update_engine_client.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_FAKE_UPDATE_ENGINE_CLIENT_H_
 #define CHROMEOS_DBUS_FAKE_UPDATE_ENGINE_CLIENT_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 58 matching lines @@
     return request_update_check_call_count_;
   }
 
   // Returns how many times Rollback() is called.
   int rollback_call_count() const { return rollback_call_count_; }
 
   // Returns how many times Rollback() is called.
   int can_rollback_call_count() const { return can_rollback_call_count_; }
 
  private:
-  ObserverList<Observer> observers_;
+  base::ObserverList<Observer> observers_;
   std::queue<UpdateEngineClient::Status> status_queue_;
   UpdateEngineClient::Status default_status_;
   UpdateEngineClient::UpdateCheckResult update_check_result_;
   bool can_rollback_stub_result_;
   int reboot_after_update_call_count_;
   int request_update_check_call_count_;
   int rollback_call_count_;
   int can_rollback_call_count_;
 };
 
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DBUS_FAKE_UPDATE_ENGINE_CLIENT_H_