win: Move a few WeakPtrFactories to the end of their containing classes.

ui/views/controls/menu/native_menu_win.h

Index: ui/views/controls/menu/native_menu_win.h
diff --git a/ui/views/controls/menu/native_menu_win.h b/ui/views/controls/menu/native_menu_win.h
index 7d4dea9a3dcea78bf3117ca93fdfa96f249cec49..3cbc25f8cd918740dfdc3c209b3f6490256d87dd 100644
--- a/ui/views/controls/menu/native_menu_win.h
+++ b/ui/views/controls/menu/native_menu_win.h
@@ -146,7 +146,6 @@ class VIEWS_EXPORT NativeMenuWin : public MenuWrapper {
   // See comment in MenuMessageHook for details on these.
   NativeMenuWin* menu_to_select_;
   int position_to_select_;
-  base::WeakPtrFactory<NativeMenuWin> menu_to_select_factory_;
 
   // If we're a submenu, this is our parent.
   NativeMenuWin* parent_;
@@ -156,6 +155,8 @@ class VIEWS_EXPORT NativeMenuWin : public MenuWrapper {
   // running.
   bool* destroyed_flag_;
 
+  base::WeakPtrFactory<NativeMenuWin> menu_to_select_factory_;
+
   // Ugly: a static pointer to the instance of this class that currently
   // has a menu open, because our hook function that receives keyboard
   // events doesn't have a mechanism to get a user data pointer.