Dart: Encode/Decode handle and interface types.

mojo/public/dart/src/client.dart

 // Copyright 2014 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.
 
 part of bindings;
 
 abstract class Client extends core.MojoEventStreamListener {
   Map<int, Completer> _completerMap;
   int _nextId = 0;
 
   Client(core.MojoMessagePipeEndpoint endpoint) :
       _completerMap = {},
       super(endpoint);
 
-  Client.fromHandle(int handle) :
+  Client.fromHandle(core.MojoHandle handle) :
       _completerMap = {},
       super.fromHandle(handle);
 
+  Client.unbound() :
+      _completerMap = {},
+      super.unbound();
+
   void handleResponse(ServiceMessage reader);
 
   void handleRead() {
     // Query how many bytes are available.
     var result = endpoint.query();
     assert(result.status.isOk || result.status.isResourceExhausted);
 
     // Read the data.
     var bytes = new ByteData(result.bytesRead);
     var handles = new List<core.MojoHandle>(result.handlesRead);
@@ skipping 40 matching lines @@
     }
 
     var completer = new Completer();
     _completerMap[id] = completer;
     return completer.future;
   }
 
   // Need a getter for this for access in subclasses.
   Map<int, Completer> get completerMap => _completerMap;
 }