ozone: Add initial build support for xkbcommon

ui/events/ozone/events_ozone.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [{
     'target_name': 'events_ozone',
@@ skipping 18 matching lines @@
       'device/udev/device_manager_udev.cc',
       'device/udev/device_manager_udev.h',
       'events_ozone_export.h',
     ],
     'conditions': [
       ['use_udev==0', {
         'sources/': [
           ['exclude', '_udev\\.(h|cc)$'],
         ],
       }],
+      ['use_xkbcommon==1', {
+        'dependencies': [
+          '../../../build/linux/system.gyp:xkbcommon',
+        ],
+        'defines': [
+          'USE_XKBCOMMON',
+        ],
+      }],
       ['use_ozone_evdev==1 and use_udev==1', {
         'dependencies': [
           '<(DEPTH)/device/udev_linux/udev.gyp:udev_linux',
         ],
       }],
     ],
   }, {
     'target_name': 'events_ozone_evdev',
     'type': '<(component)',
     'dependencies': [
@@ skipping 67 matching lines @@
         'sources/': [
           ['exclude', '^evdev/libgestures_glue/'],
         ],
       }],
       ['use_ozone_evdev==1', {
         'defines': ['USE_OZONE_EVDEV=1'],
       }],
     ],
   }]
 }