Implement a trivial Mojo EchoService that can be connected to over DBus

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 47 matching lines @@
         ['use_aura==1', {
           'dependencies': [
             'mojo_aura_demo',
             'mojo_launcher',
             'mojo_view_manager',
           ],
         }],
       ]
     },
     {
+      'target_name': 'mojo_external_service_bindings',
+      'type': 'static_library',
+      'sources': [
+        'shell/external_service.mojom',
+      ],
+      'variables': {
+        'mojom_base_output_dir': 'mojo',
+      },
+      'includes': [ 'public/tools/bindings/mojom_bindings_generator.gypi' ],
+      'export_dependent_settings': [
+        'mojo_bindings',
+      ],
+      'dependencies': [
+        'mojo_bindings',
+      ],
+    },
+    {
       'target_name': 'mojo_run_all_unittests',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:test_support_base',
         '../testing/gtest.gyp:gtest',
         'mojo_system_impl',
         'mojo_test_support',
         'mojo_test_support_impl',
       ],
@@ skipping 327 matching lines @@
       ],
     },
     {
       'target_name': 'mojo_shell_lib',
       'type': 'static_library',
       'dependencies': [
         '../base/base.gyp:base',
         '../base/base.gyp:base_static',
         '../net/net.gyp:net',
         '../url/url.gyp:url_lib',
+        'mojo_external_service_bindings',
         'mojo_gles2_impl',
         'mojo_service_manager',
         'mojo_shell_bindings',
         'mojo_system_impl',
         'mojo_native_viewport_service',
         'mojo_spy',
       ],
       'variables': {
         'mojom_base_output_dir': 'mojo',
       },
@@ skipping 31 matching lines @@
         'shell/storage.h',
         'shell/switches.cc',
         'shell/switches.h',
         'shell/task_runners.cc',
         'shell/task_runners.h',
         'shell/test_child_process.cc',
         'shell/test_child_process.h',
         'shell/url_request_context_getter.cc',
         'shell/url_request_context_getter.h',
       ],
+      'conditions': [
+        ['OS=="linux"', {
+          'sources': [
+            'shell/dbus_service_loader.cc',

[DaveMoore, 2014/04/22 20:39:51]

It's more common in gyp files to list all files in the target and then exclude
them when not required. For OS dependent ones you can do that automatically
calling this dbux_service_loader_linux.{h,cc}. You would leave the extra
dependencies here though.

[Chris Masone, 2014/04/22 21:16:30]

Done.

+            'shell/dbus_service_loader.h',
+          ],
+          'dependencies': [
+            '../build/linux/system.gyp:dbus',
+            '../dbus/dbus.gyp:dbus',
+          ],
+        }],
+      ],
     },
     {
       'target_name': 'mojo_shell',
       'type': 'executable',
       'dependencies': [
         '../base/base.gyp:base',
         '../ui/gl/gl.gyp:gl',
         '../url/url.gyp:url_lib',
         'mojo_common_lib',
         'mojo_environment_chromium',
@@ skipping 177 matching lines @@
             'mojo_js_unittests.isolate',
           ],
           'sources': [
             'mojo_js_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }