Cleanup in policy code, removed some dead code.

chrome/browser/policy/cros_user_policy_cache.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_POLICY_CROS_USER_POLICY_CACHE_H_
 #define CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_
 #pragma once
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/weak_ptr.h"
 #include "chrome/browser/policy/cloud_policy_cache_base.h"
 #include "chrome/browser/policy/user_policy_disk_cache.h"
 #include "chrome/browser/policy/user_policy_token_cache.h"
 
 namespace chromeos {
 class SessionManagerClient;
 }
 
 namespace policy {
 
@@ skipping 92 matching lines @@
   base::WeakPtrFactory<UserPolicyDiskCache::Delegate>
       legacy_policy_cache_delegate_factory_;
   scoped_refptr<UserPolicyDiskCache> legacy_policy_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(CrosUserPolicyCache);
 };
 
 }  // namespace policy
 
 #endif  // CHROME_BROWSER_POLICY_CROS_USER_POLICY_CACHE_H_