Revert 227566 "Fix some WeakPtrFactory members that aren't last"

base/run_loop.h

Index: base/run_loop.h
===================================================================
--- base/run_loop.h	(revision 228862)
+++ base/run_loop.h	(working copy)
@@ -94,6 +94,9 @@
 
   MessageLoop* loop_;
 
+  // WeakPtrFactory for QuitClosure safety.
+  base::WeakPtrFactory<RunLoop> weak_factory_;
+
   // Parent RunLoop or NULL if this is the top-most RunLoop.
   RunLoop* previous_run_loop_;
 
@@ -113,9 +116,6 @@
   // that we should quit Run once it becomes idle.
   bool quit_when_idle_received_;
 
-  // WeakPtrFactory for QuitClosure safety.
-  base::WeakPtrFactory<RunLoop> weak_factory_;
-
   DISALLOW_COPY_AND_ASSIGN(RunLoop);
 };