Adds a generator for writing messages to disk

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 17 matching lines @@
       'target_name': 'mojo',
       'type': 'none',
       'dependencies': [
         'mojo_apps_js_unittests',
         'mojo_bindings',
         'mojo_compositor_app',
         'mojo_common_lib',
         'mojo_common_unittests',
         'mojo_js',
         'mojo_js_unittests',
+        'mojo_message_generator',
         'mojo_pepper_container_app',
         'mojo_public_test_utils',
         'mojo_public_bindings_unittests',
         'mojo_public_environment_unittests',
         'mojo_public_system_perftests',
         'mojo_public_system_unittests',
         'mojo_public_utility_unittests',
         'mojo_sample_app',
         'mojo_service_manager',
         'mojo_service_manager_unittests',
@@ skipping 463 matching lines @@
       'dependencies': [
         '../gin/gin.gyp:gin_test',
         'mojo_js_bindings_lib',
         'mojo_run_all_unittests',
         'mojo_sample_service',
       ],
       'sources': [
         'bindings/js/run_js_tests.cc',
       ],
     },
+    {
+      'target_name': 'mojo_message_generator',
+      'type': 'executable',
+      'dependencies': [
+        '../base/base.gyp:base',
+        '../testing/gtest.gyp:gtest',
+        'mojo_bindings',
+        'mojo_common_lib',
+        'mojo_environment_chromium',
+        'mojo_system',
+        'mojo_system_impl',
+      ],
+      'sources': [
+        'tools/message_generator.cc',
+      ],
+    },
   ],
   'conditions': [
     ['OS=="android"', {
       'targets': [
         {
           'target_name': 'mojo_native_viewport_java',
           'type': 'none',
           'dependencies': [
             '../base/base.gyp:base_java',
           ],
@@ skipping 81 matching lines @@
             'mojo_js_unittests.isolate',
           ],
           'sources': [
             'mojo_js_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }