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

components/policy/core/common/async_policy_provider.h

Index: components/policy/core/common/async_policy_provider.h
diff --git a/components/policy/core/common/async_policy_provider.h b/components/policy/core/common/async_policy_provider.h
index 879e9fa730dfc557cd215398466a4a4e4d95f706..301f15dabf38a786fba7d9d50f1f80f4305c2685 100644
--- a/components/policy/core/common/async_policy_provider.h
+++ b/components/policy/core/common/async_policy_provider.h
@@ -60,14 +60,14 @@ class POLICY_EXPORT AsyncPolicyProvider : public ConfigurationPolicyProvider,
   // on the background thread but is owned by |this|.
   AsyncPolicyLoader* loader_;
 
-  // 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_;
 
+  // Used to get a WeakPtr to |this| for the update callback given to the
+  // loader.
+  base::WeakPtrFactory<AsyncPolicyProvider> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(AsyncPolicyProvider);
 };