Fixed crash in CloudPolicyManager.

chrome/browser/policy/cloud/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/cloud_policy_manager.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 114 matching lines @@
       this,
       schema_registry(),
       core(),
       resource_cache.Pass(),
       request_context,
       file_task_runner_,
       io_task_runner_));
 #endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
 }
 
+void CloudPolicyManager::ClearAndDestroyComponentCloudPolicyService() {
+#if !defined(OS_ANDROID) && !defined(OS_IOS)
+  if (component_policy_service_) {
+    component_policy_service_->ClearCache();
+    component_policy_service_.reset();
+  }
+#endif  // !defined(OS_ANDROID) && !defined(OS_IOS)
+}
+
 void CloudPolicyManager::OnRefreshComplete(bool success) {
   waiting_for_policy_refresh_ = false;
   CheckAndPublishPolicy();
 }
 
 }  // namespace policy