Do not build message_pump_x.cc when use_wayland

base/base.gypi

 # 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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
     },
     'target_conditions': [
@@ skipping 390 matching lines @@
           '..',
         ],
         # These warnings are needed for the files in third_party\dmg_fp.
         'msvs_disabled_warnings': [
           4244, 4554, 4018, 4102,
         ],
         'mac_framework_dirs': [
           '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks',
         ],
         'conditions': [
-          [ 'use_wayland == 1', {
-            'sources!': [
-              'message_pump_gtk.cc',
-              'message_pump_x.cc',
-            ],
-          }],
           [ 'use_glib==0', {
               'sources/': [
                 ['exclude', '^nix/'],
               ],
               'sources!': [
                 'atomicops_internals_x86_gcc.cc',
                 'message_pump_glib.cc',
                 'message_pump_x.cc',
               ],
           }],
           [ 'toolkit_uses_gtk==0', {
             'sources!': [ 'message_pump_gtk.cc', ],
           }],
           [ '(touchui==0 and use_aura==0) or OS == "win"', {
             'sources!' : [ 'message_pump_x.cc', ],
           }, {
             'sources!' : [ 'message_pump_gtk.cc', ],
-            'sources/' : [ [ 'include', 'message_pump_x.cc', ] ],
+            'sources/' : [ [ 'include', '^message_pump_x\\.cc$', ] ],
+          }],
+          [ 'use_wayland==1', {
+            'sources/': [
+              [ 'exclude', '^message_pump_gtk\\.cc$',],
+              [ 'exclude', '^message_pump_x\\.cc$',],
+            ],
           }],
           [ 'OS != "linux" and OS != "openbsd"', {
               'sources!': [
                 # Not automatically excluded by the *linux.cc rules.
                 'linux_util.cc',
               ],
             },
           ],
           [ 'OS == "android"', {
             'sources!': [
@@ skipping 386 matching lines @@
             'third_party/xdg_mime/xdgmimemagic.c',
             'third_party/xdg_mime/xdgmimemagic.h',
             'third_party/xdg_mime/xdgmimeparent.c',
             'third_party/xdg_mime/xdgmimeparent.h',
           ],
         },
       ],
     }],
   ],
 }