Generate Mojom Types for Dart

mojo/dart/packages/mojo/lib/src/proxy.dart

Index: mojo/dart/packages/mojo/lib/src/proxy.dart
diff --git a/mojo/dart/packages/mojo/lib/src/proxy.dart b/mojo/dart/packages/mojo/lib/src/proxy.dart
index 72ef13daa575db2121467655da7eee67f0098ae2..fd5eba2dba001f9d97473a82b158b67f424182bc 100644
--- a/mojo/dart/packages/mojo/lib/src/proxy.dart
+++ b/mojo/dart/packages/mojo/lib/src/proxy.dart
@@ -35,6 +35,13 @@ abstract class Proxy extends core.MojoEventHandler {
   /// call to [queryVersion] or [requireVersion] is made.
   int get version => _version;
 
+  /// Returns a service description, which exposes the mojom type information
+  /// of the service being proxied. This type information can be forwarded to
+  /// other Mojo applications and can be used to implement a generic client.
+  /// Note: In some implementations, the ServiceDescription returned will not
+  /// provide type information. Methods called may return nil or an error.
+  service_describer.ServiceDescription get description => null;
+
   void handleRead() {
     var result = endpoint.queryAndRead();
     if ((result.data == null) || (result.dataLength == 0)) {