Purge cache when the server removes the policy for an extension.

chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc

 // 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.
 
 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 108 matching lines @@
     // fully initialized (required so we can perform the initial policy load).
     // TODO(atwilson): Change this to use a UserPolicyRequestContext once
     // Connect() is called after profile initialization. http://crbug.com/323591
     request_context = new SystemPolicyRequestContext(
         system_request_context, GetUserAgent());
   }
   scoped_ptr<CloudPolicyClient> cloud_policy_client(
       new CloudPolicyClient(std::string(), std::string(),
                             kPolicyVerificationKeyHash, user_affiliation,
                             device_management_service, request_context));
+  CreateComponentCloudPolicyService(component_policy_cache_path_,
+                                    request_context, cloud_policy_client.get());
   core()->Connect(cloud_policy_client.Pass());
   client()->AddObserver(this);
 
   external_data_manager_->Connect(request_context);
 
-  CreateComponentCloudPolicyService(component_policy_cache_path_,
-                                    request_context);
-
   // Determine the next step after the CloudPolicyService initializes.
   if (service()->IsInitializationComplete()) {
     OnInitializationCompleted(service());
   } else {
     service()->AddObserver(this);
   }
 }
 
 void UserCloudPolicyManagerChromeOS::OnAccessTokenAvailable(
     const std::string& access_token) {
@@ skipping 238 matching lines @@
     // OnComponentCloudPolicyUpdated() once it's ready.
     return;
   }
 
   core()->StartRefreshScheduler();
   core()->TrackRefreshDelayPref(local_state_,
                                 policy_prefs::kUserPolicyRefreshRate);
 }
 
 }  // namespace policy