Mojo: Implement support for |Foo&| mojom syntax

mojo/mojo_public.gypi

 {
   'targets': [
     {
       'target_name': 'mojo_system',
       'type': 'static_library',
       'defines': [
         'MOJO_SYSTEM_IMPLEMENTATION',
       ],
       'include_dirs': [
         '..',
@@ skipping 212 matching lines @@
       'type': 'static_library',
       'include_dirs': [
         '..'
       ],
       'sources': [
         'public/cpp/bindings/array.h',
         'public/cpp/bindings/callback.h',
         'public/cpp/bindings/error_handler.h',
         'public/cpp/bindings/interface_impl.h',
         'public/cpp/bindings/interface_ptr.h',
+        'public/cpp/bindings/interface_request.h',
         'public/cpp/bindings/message.h',
         'public/cpp/bindings/message_filter.h',
         'public/cpp/bindings/no_interface.h',
         'public/cpp/bindings/string.h',
         'public/cpp/bindings/sync_dispatcher.h',
         'public/cpp/bindings/type_converter.h',
         'public/cpp/bindings/lib/array_internal.h',
         'public/cpp/bindings/lib/array_internal.cc',
         'public/cpp/bindings/lib/array_serialization.h',
         'public/cpp/bindings/lib/bindings_internal.h',
@@ skipping 179 matching lines @@
           },
           'dependencies': [
             'mojo_public_java',
           ],
           'includes': [ '../build/java.gypi' ],
         },
       ],
     }],
   ],
 }