x11: Remove MessagePumpObserver.

base/message_loop/message_pump_x11.h

 // 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.
 
 #ifndef BASE_MESSAGE_LOOP_MESSAGE_PUMP_X11_H
 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_X11_H
 
 #include <bitset>
 #include <map>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_pump.h"
-#include "base/message_loop/message_pump_dispatcher.h"
 #include "base/message_loop/message_pump_glib.h"
-#include "base/message_loop/message_pump_observer.h"
 #include "base/observer_list.h"
 
-// It would be nice to include the X11 headers here so that we use Window
-// instead of its typedef of unsigned long, but we can't because everything in
-// chrome includes us through base/message_loop/message_loop.h, and X11's crappy
-// #define heavy headers muck up half of chrome.
-
-typedef struct _GPollFD GPollFD;
-typedef struct _GSource GSource;
 typedef struct _XDisplay Display;
 
 namespace base {
 
 // This class implements a message-pump for dispatching X events.
-//
-// If there's a current dispatcher given through RunWithDispatcher(), that
-// dispatcher receives events. Otherwise, we route to messages to dispatchers
-// who have subscribed to messages from a specific X11 window.
 class BASE_EXPORT MessagePumpX11 : public MessagePumpGlib {
  public:
   MessagePumpX11();
   virtual ~MessagePumpX11();
 
   // Returns default X Display.
   static Display* GetDefaultXDisplay();
 
   // Returns the UI or GPU message pump.
   static MessagePumpX11* Current();
 
-  // Adds an Observer, which will start receiving notifications immediately.
-  void AddObserver(MessagePumpObserver* observer);
-
-  // Removes an Observer.  It is safe to call this method while an Observer is
-  // receiving a notification callback.
-  void RemoveObserver(MessagePumpObserver* observer);
-
-  // Sends the event to the observers.
-  void WillProcessXEvent(XEvent* xevent);
-  void DidProcessXEvent(XEvent* xevent);
-
  private:
-  // List of observers.
-  ObserverList<MessagePumpObserver> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(MessagePumpX11);
 };
 
 #if !defined(TOOLKIT_GTK)
 typedef MessagePumpX11 MessagePumpForUI;
 #endif
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_LOOP_MESSAGE_PUMP_X11_H