Fix ChromeOS Ozone build since it doesn't have xdisplaycheck.

testing/chromoting/chromoting_integration_tests.isolate

 # Copyright (c) 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.
 {
   'conditions': [
     ['OS=="linux"', {
       'variables': {
         'command': [
           '../xvfb.py',
           '<(PRODUCT_DIR)',
           '<(PRODUCT_DIR)/browser_tests<(EXECUTABLE_SUFFIX)',
           '--gtest_filter=RemoteDesktopBrowserTest.MANUAL_Launch',
           '--run-manual',
           '--ui-test-action-timeout=100000',
           '--webapp-unpacked=<(PRODUCT_DIR)/remoting/remoting.webapp',
           '--extension-name=Chromoting',
         ],
         'isolate_dependency_tracked': [
           '../xvfb.py',
           '<(PRODUCT_DIR)/libffmpegsumo.so',
           '<(PRODUCT_DIR)/libosmesa.so',
           '<(PRODUCT_DIR)/nacl_irt_x86_64.nexe',
+        ],
+      },
+    }],
+    ['OS=="linux" and use_ozone==0', {
+      'variables': {
+        'isolate_dependency_tracked': [
           '<(PRODUCT_DIR)/xdisplaycheck<(EXECUTABLE_SUFFIX)',
         ],
       },
     }],
      ['OS=="linux" or OS=="mac" or OS=="win"', {
       'variables': {
         'isolate_dependency_tracked': [
           '../test_env.py',
           '<(PRODUCT_DIR)/browser_tests<(EXECUTABLE_SUFFIX)',
           '<(PRODUCT_DIR)/remoting/remoting.webapp/',
@@ skipping 21 matching lines @@
           '--webapp-unpacked=<(PRODUCT_DIR)/remoting/remoting.webapp',
           '--extension-name=Chromoting',
         ],
       },
     }],
   ],
   'includes': [
     '../../base/base.isolate',
   ],
 }