gtk: Some code cleanup for the message-pump.

base/message_loop/message_pump_glib.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_GLIB_H_
 #define BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_
 
 #include "base/base_export.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_pump.h"
@@ skipping 33 matching lines @@
   // Internal methods used for processing the pump callbacks.  They are
   // public for simplicity but should not be used directly.  HandlePrepare
   // is called during the prepare step of glib, and returns a timeout that
   // will be passed to the poll. HandleCheck is called after the poll
   // has completed, and returns whether or not HandleDispatch should be called.
   // HandleDispatch is called if HandleCheck returned true.
   int HandlePrepare();
   bool HandleCheck();
   void HandleDispatch();
 
-  // 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);
-
   // Overridden from MessagePump:
   virtual void Run(Delegate* delegate) OVERRIDE;
   virtual void Quit() OVERRIDE;
   virtual void ScheduleWork() OVERRIDE;
   virtual void ScheduleDelayedWork(const TimeTicks& delayed_work_time) OVERRIDE;
 
  protected:
   // Returns the dispatcher for the current run state (|state_->dispatcher|).
   MessagePumpDispatcher* GetDispatcher();
 
-  ObserverList<MessagePumpObserver>& observers() { return observers_; }
-
  private:
   // We may make recursive calls to Run, so we save state that needs to be
   // separate between them in this structure type.
   struct RunState;
 
   RunState* state_;
 
   // This is a GLib structure that we can add event sources to.  We use the
   // default GLib context, which is the one to which all GTK events are
   // dispatched.
   GMainContext* context_;
 
   // This is the time when we need to do delayed work.
   TimeTicks delayed_work_time_;
 
   // The work source.  It is shared by all calls to Run and destroyed when
   // the message pump is destroyed.
   GSource* work_source_;
 
   // We use a wakeup pipe to make sure we'll get out of the glib polling phase
   // when another thread has scheduled us to do some work.  There is a glib
   // mechanism g_main_context_wakeup, but this won't guarantee that our event's
   // Dispatch() will be called.
   int wakeup_pipe_read_;
   int wakeup_pipe_write_;
   // Use a scoped_ptr to avoid needing the definition of GPollFD in the header.
   scoped_ptr<GPollFD> wakeup_gpollfd_;
 
-  // List of observers.
-  ObserverList<MessagePumpObserver> observers_;
-
   DISALLOW_COPY_AND_ASSIGN(MessagePumpGlib);
 };
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_LOOP_MESSAGE_PUMP_GLIB_H_