Dart: Removes need to call listen().

mojo/public/dart/src/stub.dart

Index: mojo/public/dart/src/stub.dart
diff --git a/mojo/public/dart/src/stub.dart b/mojo/public/dart/src/stub.dart
index f11747abf89b666f20e0cb97e349d5684929ecbb..03407a67bc925e61e344bf9708d996cda09272d2 100644
--- a/mojo/public/dart/src/stub.dart
+++ b/mojo/public/dart/src/stub.dart
@@ -8,13 +8,11 @@ abstract class Stub extends core.MojoEventStreamListener {
   int _outstandingResponseFutures = 0;
   bool _isClosing = false;
 
-  Stub.fromEndpoint(core.MojoMessagePipeEndpoint endpoint, {bool doListen: true,
-      Function onClosed})
-      : super.fromEndpoint(endpoint, doListen: doListen, onClosed: onClosed);
+  Stub.fromEndpoint(core.MojoMessagePipeEndpoint endpoint)
+      : super.fromEndpoint(endpoint);
 
-  Stub.fromHandle(core.MojoHandle handle, {bool doListen: true,
-      Function onClosed})
-      : super.fromHandle(handle, doListen: doListen, onClosed: onClosed);
+  Stub.fromHandle(core.MojoHandle handle)
+      : super.fromHandle(handle);
 
   Stub.unbound() : super.unbound();