ComponentCloudPolicyService tracks the signin state.

chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.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_CHROMEOS_POLICY_USER_CLOUD_POLICY_MANAGER_CHROMEOS_H_
 #define CHROME_BROWSER_CHROMEOS_POLICY_USER_CLOUD_POLICY_MANAGER_CHROMEOS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 78 matching lines @@
 
   // CloudPolicyService::Observer:
   virtual void OnInitializationCompleted(CloudPolicyService* service) OVERRIDE;
 
   // CloudPolicyClient::Observer:
   virtual void OnPolicyFetched(CloudPolicyClient* client) OVERRIDE;
   virtual void OnRegistrationStateChanged(CloudPolicyClient* client) OVERRIDE;
   virtual void OnClientError(CloudPolicyClient* client) OVERRIDE;
 
   // ComponentCloudPolicyService::Delegate:
-  virtual void OnComponentCloudPolicyRefreshNeeded() OVERRIDE;
   virtual void OnComponentCloudPolicyUpdated() OVERRIDE;
 
  private:
   void CreateComponentCloudPolicyService(
       const scoped_refptr<net::URLRequestContextGetter>& request_context);
 
   // Fetches a policy token using the authentication context of the signin
   // Profile, and calls back to OnOAuth2PolicyTokenFetched when done.
   void FetchPolicyOAuthTokenUsingSigninProfile();
 
@@ skipping 51 matching lines @@
   base::Time time_init_completed_;
   base::Time time_token_available_;
   base::Time time_client_registered_;
 
   DISALLOW_COPY_AND_ASSIGN(UserCloudPolicyManagerChromeOS);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_CHROMEOS_POLICY_USER_CLOUD_POLICY_MANAGER_CHROMEOS_H_