Do not build unicode_to_keysym.cc when use_x11 == 0

remoting/remoting_test.gypi

 # Copyright 2014 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': [
     {
       # GN version: //remoting:test_support
       'target_name': 'remoting_test_support',
       'type': 'static_library',
@@ skipping 388 matching lines @@
           'sources!': [
             'host/chromeos/aura_desktop_capturer_unittest.cc',
             'host/clipboard_aura_unittest.cc',
           ],
         }, { # chromeos==1
           'sources!': [
             'host/linux/x_server_clipboard_unittest.cc',
             'host/local_input_monitor_unittest.cc',
           ],
         }],
+        ['use_x11 == 0', {
+          'sources!' : [
+            'host/linux/unicode_to_keysym_unittest.cc',
+          ]
+        }],
         [ 'use_ozone==1', {
           'sources!': [
             'host/local_input_monitor_unittest.cc',
           ],
         }],
         ['enable_remoting_host == 0', {
           'dependencies!': [
             'remoting_host',
             'remoting_host_setup_base',
             'remoting_it2me_host_static',
@@ skipping 203 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'remoting_unittests.isolate',
           ],
         },
       ],
     }],
   ] # end of 'conditions'
 }