Revert "Refactor MessagePumpX to dispatch events inside of the source Dispatch function."

base/message_pump_glib.h

 // Copyright (c) 2011 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_PUMP_GLIB_H_
 #define BASE_MESSAGE_PUMP_GLIB_H_
 #pragma once
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_pump.h"
@@ skipping 23 matching lines @@
 // platforms using GLib.
 class MessagePumpGlib : public MessagePump {
  public:
   MessagePumpGlib();
   virtual ~MessagePumpGlib();
 
   // Like MessagePump::Run, but events are routed through dispatcher.
   virtual void RunWithDispatcher(Delegate* delegate,
                                  MessagePumpDispatcher* dispatcher);
 
+  // Run a single iteration of the mainloop. A return value of true indicates
+  // that an event was handled. |block| indicates if it should wait if no event
+  // is ready for processing.
+  virtual bool RunOnce(GMainContext* context, bool block) = 0;
+
   // 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();
 
@@ skipping 46 matching lines @@
 
   // List of observers.
   ObserverList<MessagePumpObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(MessagePumpGlib);
 };
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_PUMP_GLIB_H_