Depend on xdisplaycheck when use_x11==1, not when toolkit_uses_gtk==1

ui/ui_unittests.gypi

 # 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.
 
 {
   'targets': [
     {
       'target_name': 'ui_test_support',
       'type': 'static_library',
       'dependencies': [
@@ skipping 203 matching lines @@
           ],
         }],
         ['use_glib == 1 or OS == "ios"', {
           'dependencies': [
             'base/strings/ui_strings.gyp:ui_unittest_strings',
           ],
         }],
         ['use_glib == 1', {
           'dependencies': [
             '../build/linux/system.gyp:pangocairo',
-            '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
           ],
           'conditions': [
             ['linux_use_tcmalloc==1', {
                'dependencies': [
                  '../base/allocator/allocator.gyp:allocator',
                ],
             }],
             ['toolkit_views==1', {
               'sources!': [
                 'browser/ui/gtk/gtk_expanded_container_unittest.cc',
               ],
             }],
           ],
         }],
+        ['use_x11==1', {
+          'dependencies': [
+            '../tools/xdisplaycheck/xdisplaycheck.gyp:xdisplaycheck',
+          ],
+        }],
         ['toolkit_uses_gtk == 1', {
           'sources': [
             'base/dragdrop/gtk_dnd_util_unittest.cc',
           ],
           'dependencies': [
             '../build/linux/system.gyp:gtk',
           ],
         }],
         ['OS=="android" or OS=="ios"', {
           'sources!': [
@@ skipping 49 matching lines @@
           'variables': {
             'test_suite_name': 'ui_unittests',
             'input_shlib_path': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)ui_unittests<(SHARED_LIB_SUFFIX)',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],
   ],
 }