Fix dartium that was broken by Completer change.

tools/dom/src/native_DOMPublic.dart

Index: tools/dom/src/native_DOMPublic.dart
diff --git a/tools/dom/src/native_DOMPublic.dart b/tools/dom/src/native_DOMPublic.dart
index 4034d9165ebd438dde081c59beb1ab02a7f384de..5e96fcd4894c2a5a77c1b29a4b5ecb4a13606460 100644
--- a/tools/dom/src/native_DOMPublic.dart
+++ b/tools/dom/src/native_DOMPublic.dart
@@ -5,7 +5,7 @@
 part of html;
 
 _makeSendPortFuture(spawnRequest) {
-  final completer = new Completer<SendPort>();
+  final completer = new Completer<SendPort>.sync();

[Anton Muhin, 2013/05/13 09:19:36]

DBQ: do you know why it's needed?

[floitsch, 2013/05/13 09:21:21]

Not completely. There must be something that requires the port to be opened when
the completer is invoked.

[Anton Muhin, 2013/05/14 13:55:33]

Thanks a lot, Florian, I'll have a look.

On 2013/05/13 09:21:21, floitsch wrote:

   final port = new ReceivePort();
   port.receive((result, _) {
     completer.complete(result);