Revert 263726 "x11: Remove X11 message-pump."

trunk/src/base/BUILD.gn

 # Copyright (c) 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.
 
 import("//build/config/ui.gni")
 
 component("base") {
   sources = [
     "third_party/dmg_fp/dmg_fp.h",
     "third_party/dmg_fp/g_fmt.cc",
@@ skipping 312 matching lines @@
     "message_loop/message_pump_gtk.h",
     "message_loop/message_pump_io_ios.cc",
     "message_loop/message_pump_io_ios.h",
     "message_loop/message_pump_libevent.cc",
     "message_loop/message_pump_libevent.h",
     "message_loop/message_pump_mac.h",
     "message_loop/message_pump_mac.mm",
     "message_loop/message_pump_observer.h",
     "message_loop/message_pump_win.cc",
     "message_loop/message_pump_win.h",
+    "message_loop/message_pump_x11.cc",
+    "message_loop/message_pump_x11.h",
     "metrics/field_trial.cc",
     "metrics/field_trial.h",
     "metrics/sample_map.cc",
     "metrics/sample_map.h",
     "metrics/sample_vector.cc",
     "metrics/sample_vector.h",
     "metrics/bucket_ranges.cc",
     "metrics/bucket_ranges.h",
     "metrics/histogram.cc",
     "metrics/histogram.h",
@@ skipping 575 matching lines @@
   #    # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   #    'msvs_disabled_warnings': [
   #      4267,
   #    ],
   #  }],
   #],
   #'variables': {
   #  'optimize': 'max',
   #},
 }