Adding a mojo interface to the mojo spy.

mojo/mojo.gyp

Index: mojo/mojo.gyp
diff --git a/mojo/mojo.gyp b/mojo/mojo.gyp
index 3893b6b7ebd6a57b50804df6389662ce8dce27a6..a07e3a7d96c5808f930d93191c0b553c30faac33 100644
--- a/mojo/mojo.gyp
+++ b/mojo/mojo.gyp
@@ -448,9 +448,16 @@
         '../url/url.gyp:url_lib',
         'mojo_service_manager',
       ],
+      'variables': {
+        'mojom_base_output_dir': 'mojo',
+      },
+      'includes': [ 'public/tools/bindings/mojom_bindings_generator.gypi' ],
       'sources': [
+        'spy/public/spy.mojom',
         'spy/spy.cc',
         'spy/spy.h',
+        'spy/spy_server_impl.h',
+        'spy/spy_server_impl.cc',
         'spy/websocket_server.cc',
         'spy/websocket_server.h',
       ],