Code re-factor related to WeakPtrFactory in src/component module

components/policy/core/common/async_policy_provider.h

 // Copyright 2013 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 COMPONENTS_POLICY_CORE_COMMON_ASYNC_POLICY_PROVIDER_H_
 #define COMPONENTS_POLICY_CORE_COMMON_ASYNC_POLICY_PROVIDER_H_
 
 #include "base/cancelable_callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 42 matching lines @@
   // forwards to OnLoaderReloaded() on the loop that owns the provider,
   // if |weak_this| is still valid.
   static void LoaderUpdateCallback(scoped_refptr<base::MessageLoopProxy> loop,
                                    base::WeakPtr<AsyncPolicyProvider> weak_this,
                                    scoped_ptr<PolicyBundle> bundle);
 
   // The |loader_| that does the platform-specific policy loading. It lives
   // on the background thread but is owned by |this|.
   AsyncPolicyLoader* loader_;
 
+  // Callback used to synchronize RefreshPolicies() calls with the background
+  // thread. See the implementation for the details.
+  base::CancelableClosure refresh_callback_;
+
   // Used to get a WeakPtr to |this| for the update callback given to the
   // loader.
   base::WeakPtrFactory<AsyncPolicyProvider> weak_factory_;
 
-  // Callback used to synchronize RefreshPolicies() calls with the background
-  // thread. See the implementation for the details.
-  base::CancelableClosure refresh_callback_;
-
   DISALLOW_COPY_AND_ASSIGN(AsyncPolicyProvider);
 };
 
 }  // namespace policy
 
 #endif  // COMPONENTS_POLICY_CORE_COMMON_ASYNC_POLICY_PROVIDER_H_