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

components/policy/core/browser/url_blacklist_manager.h

Index: components/policy/core/browser/url_blacklist_manager.h
diff --git a/components/policy/core/browser/url_blacklist_manager.h b/components/policy/core/browser/url_blacklist_manager.h
index dff8ac18863943e7a864232373068bc0389240bc..aed642b2001086d1b87f496736aa7a26e14733a2 100644
--- a/components/policy/core/browser/url_blacklist_manager.h
+++ b/components/policy/core/browser/url_blacklist_manager.h
@@ -196,9 +196,6 @@ class POLICY_EXPORT URLBlacklistManager {
   // UI thread
   // ---------
 
-  // Used to post update tasks to the UI thread.
-  base::WeakPtrFactory<URLBlacklistManager> ui_weak_ptr_factory_;
-
   // Used to track the policies and update the blacklist on changes.
   PrefChangeRegistrar pref_change_registrar_;
   PrefService* pref_service_;  // Weak.
@@ -219,15 +216,18 @@ class POLICY_EXPORT URLBlacklistManager {
   // IO thread
   // ---------
 
-  // Used to get |weak_ptr_| to self on the IO thread.
-  base::WeakPtrFactory<URLBlacklistManager> io_weak_ptr_factory_;
-
   // Used to post tasks to the UI thread.
   scoped_refptr<base::SequencedTaskRunner> ui_task_runner_;
 
   // The current blacklist.
   scoped_ptr<URLBlacklist> blacklist_;
 
+  // Used to post update tasks to the UI thread.
+  base::WeakPtrFactory<URLBlacklistManager> ui_weak_ptr_factory_;
+
+  // Used to get |weak_ptr_| to self on the IO thread.
+  base::WeakPtrFactory<URLBlacklistManager> io_weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(URLBlacklistManager);
 };