Dart: Removes need to call listen().

mojo/public/dart/src/proxy.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 Proxy extends core.MojoEventStreamListener {
   Map<int, Completer> _completerMap;
   int _nextId = 0;
 
-  Proxy.fromEndpoint(core.MojoMessagePipeEndpoint endpoint,
-      {bool doListen: true, Function onClosed})
+  Proxy.fromEndpoint(core.MojoMessagePipeEndpoint endpoint)
       : _completerMap = {},
-        super.fromEndpoint(endpoint, doListen: doListen, onClosed: onClosed);
+        super.fromEndpoint(endpoint);
 
-  Proxy.fromHandle(core.MojoHandle handle,
-      {bool doListen: true, Function onClosed})
+  Proxy.fromHandle(core.MojoHandle handle)
       : _completerMap = {},
-        super.fromHandle(handle, doListen: doListen, onClosed: onClosed);
+        super.fromHandle(handle);
 
   Proxy.unbound()
       : _completerMap = {},
         super.unbound();
 
   void handleResponse(ServiceMessage reader);
 
   void handleRead() {
     // Query how many bytes are available.
     var result = endpoint.query();
@@ skipping 53 matching lines @@
     var superString = super.toString();
     return "Proxy(${superString})";
   }
 }
 
 // Generated Proxy classes implement this interface.
 abstract class ProxyBase {
   final Proxy impl;
   final String name;
 }