x11: Remove MessagePumpObserver.

base/message_loop/message_pump_x11.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop/message_pump_x11.h"
 
 #include <glib.h>
 #include <X11/X.h>
 #include <X11/extensions/XInput2.h>
 #include <X11/XKBlib.h>
@@ skipping 42 matching lines @@
   return static_cast<MessagePumpX11*>(loop->pump_gpu());
 }
 #else
 // static
 MessagePumpX11* MessagePumpX11::Current() {
   MessageLoopForUI* loop = MessageLoopForUI::current();
   return static_cast<MessagePumpX11*>(loop->pump_ui());
 }
 #endif
 
-void MessagePumpX11::AddObserver(MessagePumpObserver* observer) {
-  observers_.AddObserver(observer);
-}
-
-void MessagePumpX11::RemoveObserver(MessagePumpObserver* observer) {
-  observers_.RemoveObserver(observer);
-}
-
-void MessagePumpX11::WillProcessXEvent(XEvent* xevent) {
-  FOR_EACH_OBSERVER(MessagePumpObserver, observers_, WillProcessEvent(xevent));
-}
-
-void MessagePumpX11::DidProcessXEvent(XEvent* xevent) {
-  FOR_EACH_OBSERVER(MessagePumpObserver, observers_, DidProcessEvent(xevent));
-}
-
 }  // namespace base