policy: Remove SigninManager from UserCloudPolicyStore.

chrome/browser/policy/cloud/user_cloud_policy_manager.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/policy/cloud/user_cloud_policy_manager.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/sequenced_task_runner.h"
 #include "chrome/browser/policy/cloud/cloud_external_data_manager.h"
@@ skipping 28 matching lines @@
   UserCloudPolicyManagerFactory::GetInstance()->Unregister(profile_, this);
 }
 
 void UserCloudPolicyManager::Shutdown() {
   if (external_data_manager_)
     external_data_manager_->Disconnect();
   CloudPolicyManager::Shutdown();
   BrowserContextKeyedService::Shutdown();
 }
 
+void UserCloudPolicyManager::SetSigninUsername(const std::string& username) {
+  store_->SetSigninUsername(username);
+}
+
 void UserCloudPolicyManager::Connect(
     PrefService* local_state,
     scoped_refptr<net::URLRequestContextGetter> request_context,
     scoped_ptr<CloudPolicyClient> client) {
   core()->Connect(client.Pass());
   core()->StartRefreshScheduler();
   core()->TrackRefreshDelayPref(local_state,
                                 policy_prefs::kUserPolicyRefreshRate);
   if (external_data_manager_)
     external_data_manager_->Connect(request_context);
@@ skipping 17 matching lines @@
   // all external data references have been removed, causing the
   // |external_data_manager_| to clear its cache as well.
   store_->Clear();
 }
 
 bool UserCloudPolicyManager::IsClientRegistered() const {
   return client() && client()->is_registered();
 }
 
 }  // namespace policy