gtk: Allow building both the X11 and Gtk message-pumps for gtk.

base/message_loop/message_loop.h

 // Copyright 2013 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_LOOP_H_
 #define BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_
 
 #include <queue>
 #include <string>
 
@@ skipping 581 matching lines @@
 
 #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_AURA) && defined(USE_X11) && !defined(OS_NACL)
-  friend class MessagePumpAuraX11;
+  friend class MessagePumpX11;
 #endif
 #if defined(USE_OZONE) && !defined(OS_NACL)
   friend class MessagePumpOzone;
 #endif
 
   // TODO(rvargas): Make this platform independent.
   MessagePumpForUI* pump_ui() {
     return static_cast<MessagePumpForUI*>(pump_.get());
   }
 #endif  // !defined(OS_MACOSX)
@@ skipping 103 matching lines @@
 
 // Do not add any member variables to MessageLoopForIO!  This is important b/c
 // MessageLoopForIO is often allocated via MessageLoop(TYPE_IO).  Any extra
 // data that you need should be stored on the MessageLoop's pump_ instance.
 COMPILE_ASSERT(sizeof(MessageLoop) == sizeof(MessageLoopForIO),
                MessageLoopForIO_should_not_have_extra_member_variables);
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_LOOP_MESSAGE_LOOP_H_