Add a basic Mojo app that initializes V8

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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
       'target_name': 'mojo',
       'type': 'none',
       'dependencies': [
         'mojo_common_lib',
         'mojo_common_unittests',
         'mojo_public_test_support',
         'mojo_public_unittests',
         'mojo_public_perftests',
         'mojo_system',
         'mojo_system_unittests',
         'mojo_shell_lib',
         'mojo_shell',
         'mojo_utility',
+        'mojo_js',
         'sample_app',
         'mojo_bindings',
         'mojo_bindings_test',
         'native_viewport',
       ],
     },
     {
       'target_name': 'mojo_public_test_support',
       'type': 'static_library',
       'dependencies': [
@@ skipping 228 matching lines @@
       'type': 'static_library',
       'dependencies': [
         'mojo_system'
       ],
       'sources': [
         'public/utility/scoped_handle.cc',
         'public/utility/scoped_handle.h',
       ],
     },
     {
+      'target_name': 'mojo_js',
+      'type': 'shared_library',
+      'include_dirs': [
+        '..'
+      ],
+      'dependencies': [
+        '../v8/tools/gyp/v8.gyp:v8',
+      ],
+      'sources': [
+        'apps/js/main.cc',
+        'apps/js/v8_environment.cc',
+        'apps/js/v8_environment.h',
+      ],
+    },
+    {
       'target_name': 'sample_app',
       'type': 'shared_library',
       'dependencies': [
         '../ui/gl/gl.gyp:gl',
         'mojo_system',
       ],
       'sources': [
         'examples/sample_app/sample_app.cc',
         'examples/sample_app/spinning_cube.cc',
         'examples/sample_app/spinning_cube.h',
@@ skipping 151 matching lines @@
             'java_in_dir': '<(DEPTH)/mojo/shell/android/apk',
             'resource_dir': '<(DEPTH)/mojo/shell/android/apk/res',
             'native_lib_target': 'libmojo_shell',
           },
           'includes': [ '../build/java_apk.gypi' ],
         }
       ],
     }],
   ],
 }