x11: Include X11 dependencies only when building with X11.

remoting/remoting.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.
 
 {
   'variables': {
     # TODO(dmaclach): can we pick this up some other way? Right now it's
     # duplicated from chrome.gyp
     'chromium_code': 1,
 
@@ skipping 37 matching lines @@
 
     'webapp_locale_dir': '<(SHARED_INTERMEDIATE_DIR)/remoting/webapp/_locales',
 
     # Use consistent strings across all platforms.
     # These values must match host/plugin/constants.h
     'host_plugin_mime_type': 'application/vnd.chromium.remoting-host',
     'host_plugin_description': '<!(python <(version_py_path) -f <(branding_path) -t "@HOST_PLUGIN_DESCRIPTION@")',
     'host_plugin_name': '<!(python <(version_py_path) -f <(branding_path) -t "@HOST_PLUGIN_FILE_NAME@")',
 
     'conditions': [
-      # Remoting host is supported only on Windows, OSX and Linux.
-      ['OS=="win" or OS=="mac" or (OS=="linux" and chromeos==0)', {
+      # Remoting host is supported only on Windows, OSX and Linux (with X11).
+      ['OS=="win" or OS=="mac" or (OS=="linux" and chromeos==0 and use_x11==1)', {

[Wez, 2013/03/07 18:33:01]

nit: Wrap the open brace to the next line.

[Sergey Ulanov, 2013/03/07 19:39:09]

condition wrapping is not a supported feature in gyp, see:
https://codereview.chromium.org/11946026/diff/1/third_party/libjingle/libjing...

         'enable_remoting_host': 1,
       }, {
         'enable_remoting_host': 0,
       }],
       ['OS=="mac"', {
         'mac_bundle_id': '<!(python <(version_py_path) -f <(branding_path) -t "@MAC_BUNDLE_ID@")',
         'mac_creator': '<!(python <(version_py_path) -f <(branding_path) -t "@MAC_CREATOR@")',
         'host_plugin_extension': 'plugin',
         'host_plugin_prefix': '',
       }],
@@ skipping 2555 matching lines @@
                   '../base/allocator/allocator.gyp:allocator',
                 ],
               },
             ],
           ],
         }],  # end of 'toolkit_uses_gtk == 1'
       ],  # end of 'conditions'
     },  # end of target 'remoting_unittests'
   ],  # end of targets
 }