Mojo: Add a trivial end-to-end (in-process) test of Mojo shell.

mojo/mojo.gyp

 # Copyright 2013 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.
 
 {
   'target_defaults': {
     'conditions': [
       ['mojo_shell_debug_url != ""', {
         'defines': [
           'MOJO_SHELL_DEBUG=1',
@@ skipping 38 matching lines @@
         'mojo_public_utility_unittests',
         'mojo_sample_app',
         'mojo_service_manager',
         'mojo_service_manager_unittests',
         'mojo_shell',
         'mojo_shell_lib',
         'mojo_shell_tests',
         'mojo_system',
         'mojo_system_impl',
         'mojo_system_unittests',
+        'mojo_test_service',
         'mojo_utility',
         'mojo_view_manager_lib',
         'mojo_view_manager_lib_unittests',
         'mojo_wget',
       ],
       'conditions': [
         ['use_aura==1', {
           'dependencies': [
             'mojo_aura_demo',
             'mojo_aura_demo_init',
@@ skipping 518 matching lines @@
         '../base/base.gyp:test_support_base',
         '../testing/gtest.gyp:gtest',
         # TODO(vtl): We don't currently need this, but I imagine we will soon.
         # '../ui/gl/gl.gyp:gl',
         '../url/url.gyp:url_lib',
         'mojo_common_lib',
         'mojo_environment_chromium',
         'mojo_service_manager',
         'mojo_shell_lib',
         'mojo_system_impl',
+        'mojo_test_service_bindings',
       ],
       'sources': [
         'shell/child_process_host_unittest.cc',
         'shell/shell_test_base.cc',
         'shell/shell_test_base.h',
+        'shell/shell_test_base_unittest.cc',
         'shell/shell_test_main.cc',
       ],
     },
     {
       'target_name': 'mojo_service_manager_unittests',
       'type': 'executable',
       'dependencies': [
         '../base/base.gyp:base',
         '../testing/gtest.gyp:gtest',
         '../url/url.gyp:url_lib',
@@ skipping 293 matching lines @@
             'aura/screen_mojo.cc',
             'aura/screen_mojo.h',
             'aura/window_tree_host_mojo.cc',
             'aura/window_tree_host_mojo.h',
           ],
         },
       ],
     }],
   ],
 }