Revert r151669 and r155589 as non-Aura Metro mode is gone

base/message_loop/message_loop.h

Index: base/message_loop/message_loop.h
diff --git a/base/message_loop/message_loop.h b/base/message_loop/message_loop.h
index 2388b59b88e41d058887ec6919950caf1e41caca..956f5f088c8cb6d84aaed12b763016b6bccca305 100644
--- a/base/message_loop/message_loop.h
+++ b/base/message_loop/message_loop.h
@@ -550,10 +550,6 @@ class BASE_EXPORT MessageLoop : public MessagePump::Delegate {
 //
 class BASE_EXPORT MessageLoopForUI : public MessageLoop {
  public:
-#if defined(OS_WIN)
-  typedef MessagePumpForUI::MessageFilter MessageFilter;
-#endif
-
   MessageLoopForUI() : MessageLoop(TYPE_UI) {
   }
 
@@ -592,13 +588,6 @@ class BASE_EXPORT MessageLoopForUI : public MessageLoop {
   void RemoveObserver(Observer* observer);
 #endif
 
-#if defined(OS_WIN)
-  // Plese see MessagePumpForUI for definitions of this method.
-  void SetMessageFilter(scoped_ptr<MessageFilter> message_filter) {
-    pump_ui()->SetMessageFilter(message_filter.Pass());
-  }
-#endif
-
  protected:
 #if defined(USE_X11)
   friend class MessagePumpX11;