Fix WeakPtrFactory member placement

chrome/browser/android/most_visited_sites.h

Index: chrome/browser/android/most_visited_sites.h
diff --git a/chrome/browser/android/most_visited_sites.h b/chrome/browser/android/most_visited_sites.h
index 4a24ad772e2244591cd9f9135638212e5ac06c85..fae9b7936c839b9aa886cf5c73f53e1639cdeea6 100644
--- a/chrome/browser/android/most_visited_sites.h
+++ b/chrome/browser/android/most_visited_sites.h
@@ -119,9 +119,6 @@ class MostVisitedSites : public ProfileSyncServiceObserver,
   // Copy of the server suggestions (if enabled). Used for logging.
   suggestions::SuggestionsProfile server_suggestions_;
 
-  // For callbacks may be run after destruction.
-  base::WeakPtrFactory<MostVisitedSites> weak_ptr_factory_;
-
   content::NotificationRegistrar registrar_;
 
   // The source of the Most Visited sites.
@@ -131,6 +128,9 @@ class MostVisitedSites : public ProfileSyncServiceObserver,
   };
   MostVisitedSource mv_source_;
 
+  // For callbacks may be run after destruction.
+  base::WeakPtrFactory<MostVisitedSites> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(MostVisitedSites);
 };