Remove X11 and GTK dependencies from host_forwarder

tools/android/forwarder2/forwarder.gyp

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'forwarder2',
       'type': 'none',
       'dependencies': [
@@ skipping 59 matching lines @@
       'sources': [
         'command.cc',
         'common.cc',
         'daemon.cc',
         'forwarder.cc',
         'forwarders_manager.cc',
         'host_controller.cc',
         'host_forwarder_main.cc',
         'pipe_notifier.cc',
         'socket.cc',
-        # TODO(pliard): Remove this. This is needed to avoid undefined
-        # references at link time.
-        '../../../base/message_loop/message_pump_glib.cc',
-        '../../../base/message_loop/message_pump_gtk.cc',
       ],
     },
   ],
 }