Replace more ObserverList with base::ObserverList.

components/policy/core/common/cloud/cloud_policy_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 COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_CLIENT_H_
 #define COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_CLIENT_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 356 matching lines @@
   scoped_ptr<DeviceManagementRequestJob> policy_fetch_request_job_;
 
   // All of the outstanding non-policy-fetch request jobs. These jobs are
   // silently cancelled if Unregister() is called.
   ScopedVector<DeviceManagementRequestJob> request_jobs_;
 
   // The policy responses returned by the last policy fetch operation.
   ResponseMap responses_;
   DeviceManagementStatus status_;
 
-  ObserverList<Observer, true> observers_;
+  base::ObserverList<Observer, true> observers_;
   scoped_refptr<net::URLRequestContextGetter> request_context_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CloudPolicyClient);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_CLOUD_CLOUD_POLICY_CLIENT_H_