Cosmetic cleanups in chrome/browser/policy/

chrome/browser/policy/dummy_cloud_policy_provider.h

 // Copyright (c) 2011 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_DUMMY_CLOUD_POLICY_PROVIDER_H_
 #define CHROME_BROWSER_POLICY_DUMMY_CLOUD_POLICY_PROVIDER_H_
 #pragma once
 
+#include "base/observer_list.h"
 #include "chrome/browser/policy/cloud_policy_provider.h"
 
 namespace policy {
 
 // A cloud policy provider for tests, that provides 0 policies, but always
 // reports that it is initialized.
 class DummyCloudPolicyProvider : public CloudPolicyProvider {
  public:
   explicit DummyCloudPolicyProvider(const PolicyDefinitionList* policy_list);
   virtual ~DummyCloudPolicyProvider();
@@ skipping 12 matching lines @@
       ConfigurationPolicyProvider::Observer* observer) OVERRIDE;
 
   ObserverList<ConfigurationPolicyProvider::Observer, true> observer_list_;
 
   DISALLOW_COPY_AND_ASSIGN(DummyCloudPolicyProvider);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_DUMMY_CLOUD_POLICY_PROVIDER_H_