Fix WeakPtrFactory member ordering in chrome/browser

chrome/browser/jumplist_win.h

Index: chrome/browser/jumplist_win.h
diff --git a/chrome/browser/jumplist_win.h b/chrome/browser/jumplist_win.h
index 41b12a939285b2555e617f208d2b022610defd44..58dd7f12a14bea9d71b66d401c0cf233896e2f02 100644
--- a/chrome/browser/jumplist_win.h
+++ b/chrome/browser/jumplist_win.h
@@ -134,9 +134,6 @@ class JumpList : public TabRestoreServiceObserver,
   // loaded icons.
   void CreateIconFiles(const ShellLinkItemList& item_list);
 
-  // For callbacks may be run after destruction.
-  base::WeakPtrFactory<JumpList> weak_ptr_factory_;
-
   // Tracks FaviconService tasks.
   base::CancelableTaskTracker cancelable_task_tracker_;
 
@@ -174,6 +171,9 @@ class JumpList : public TabRestoreServiceObserver,
   // as they may be used by up to 3 threads.
   base::Lock list_lock_;
 
+  // For callbacks may be run after destruction.
+  base::WeakPtrFactory<JumpList> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(JumpList);
 };