Make it possible to disable dbus on linux

content/content_tests.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': 'test_support_content',
       'type': 'static_library',
       'defines!': ['CONTENT_IMPLEMENTATION'],
@@ skipping 569 matching lines @@
         ['input_speech==0', {
           'sources/': [
             ['exclude', '^browser/speech/'],
           ]
         }],
         ['notifications==0', {
            'sources!': [
              'renderer/active_notification_tracker_unittest.cc',
            ],
         }],
-        ['use_x11 == 1', {
+        ['use_x11 == 1 and use_dbus == 1', {
           'dependencies': [
             '../build/linux/system.gyp:dbus',
             '../dbus/dbus.gyp:dbus_test_support',
           ],
         }],
         ['OS=="win" and win_use_allocator_shim==1', {
           'dependencies': [
             '../base/allocator/allocator.gyp:allocator',
           ],
         }],
@@ skipping 454 matching lines @@
             'additional_src_dirs': ['../content/public/android/javatests/',],
             'resource_dir': '../shell_apk/res',
             'is_test_apk': 1,
           },
           'includes': [ '../build/java_apk.gypi' ],
         },
       ],
     }],
   ],
 }