Support exposing Mojo services between render frames, render threads, and their respective hosts.

chrome/chrome_tests_unit.gypi

 # Copyright 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': [
     {
       # This target contains mocks and test utilities that don't belong in
       # production libraries but are used by more than one test executable.
       'target_name': 'test_support_common',
       'type': 'static_library',
@@ skipping 433 matching lines @@
     {
       'target_name': 'test_support_unit',
       'type': 'static_library',
       'dependencies': [
         'chrome_resources.gyp:chrome_resources',
         'chrome_resources.gyp:chrome_strings',
         'browser',
         'common',
         'test_support_common',
         '../base/base.gyp:base',
+        '../mojo/mojo.gyp:mojo_environment_chromium',
+        '../mojo/mojo.gyp:mojo_system_impl',
         '../skia/skia.gyp:skia',
         '../sync/sync.gyp:sync',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
       ],
       'include_dirs': [
         '..',
       ],
       'sources': [
         'browser/sync/glue/session_sync_test_helper.cc',
@@ skipping 2399 matching lines @@
             'unit_tests.isolate',
           ],
           'sources': [
             'unit_tests.isolate',
           ],
         },
       ],
     }],
   ],  # 'conditions'
 }