Changes view manager test to connect via shell

mojo/mojo_services.gypi

 {
   'targets': [
     {
       'target_name': 'mojo_echo_bindings',
       'type': 'static_library',
       'sources': [
         'services/dbus_echo/echo.mojom',
       ],
       'variables': {
         'mojom_base_output_dir': 'mojo',
@@ skipping 198 matching lines @@
           ],
           'defines': [
             'MOJO_VIEW_MANAGER_IMPLEMENTATION',
           ],
         },
         {
           'target_name': 'mojo_view_manager_unittests',
           'type': 'executable',
           'dependencies': [
             '../base/base.gyp:base',
+            '../base/base.gyp:run_all_unittests',
             '../skia/skia.gyp:skia',
             '../testing/gtest.gyp:gtest',
             '../ui/aura/aura.gyp:aura',
             'mojo_environment_chromium',
-            'mojo_run_all_unittests',
             'mojo_shell_client',
+            'mojo_shell_test_support',
             'mojo_system_impl',
-            'mojo_view_manager',
             'mojo_view_manager_bindings',
           ],
           'sources': [
             'services/view_manager/view_manager_connection_unittest.cc',
           ],
         },
         {
           'target_name': 'package_mojo_view_manager',
           'variables': {
             'app_name': 'mojo_view_manager',
@@ skipping 19 matching lines @@
             'mojo_system_impl',
           ],
           'sources': [
             'services/dbus_echo/dbus_echo_service.cc',
           ],
         },
       ],
     }],
   ],
 }