Fix cloud policy duplicate registrations issue.

chrome/browser/policy/mock_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 CHROME_BROWSER_POLICY_MOCK_CLOUD_POLICY_CLIENT_H_
 #define CHROME_BROWSER_POLICY_MOCK_CLOUD_POLICY_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 36 matching lines @@
   using CloudPolicyClient::client_id_;
   using CloudPolicyClient::submit_machine_id_;
   using CloudPolicyClient::last_policy_timestamp_;
   using CloudPolicyClient::public_key_version_;
   using CloudPolicyClient::public_key_version_valid_;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockCloudPolicyClient);
 };
 
+class MockCloudPolicyClientObserver : public CloudPolicyClient::Observer {
+ public:
+  MockCloudPolicyClientObserver();
+  virtual ~MockCloudPolicyClientObserver();
+
+  MOCK_METHOD1(OnPolicyFetched, void(CloudPolicyClient*));
+  MOCK_METHOD1(OnRegistrationStateChanged, void(CloudPolicyClient*));
+  MOCK_METHOD1(OnClientError, void(CloudPolicyClient*));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(MockCloudPolicyClientObserver);
+};
+
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_MOCK_CLOUD_POLICY_CLIENT_H_