Implement spawnDomUri.

tests/html/dom_isolates_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file
 
 library DOMIsolatesTest;
 import '../../pkg/unittest/lib/unittest.dart';
 import '../../pkg/unittest/lib/html_config.dart';
 import 'dart:html';
 import 'dart:isolate';
 
@@ skipping 18 matching lines @@
     });
   });
 }
 
 dummy() => print('Bad invocation of top-level function');
 
 main() {
   useHtmlConfiguration();
 
   test('Simple DOM isolate test', () {
-    spawnDomFunction(childDomIsolate).then((sendPort) {
-      expect(sendPort.call('check'), completion('${window.location}'));
-    });
+    spawnDomFunction(childDomIsolate).then(expectAsync1(
+        (sendPort) {
+            expect(sendPort.call('check'), completion('${window.location}'));
+        }
+    ));
   });
 
   test('Nested DOM isolates test', () {
-    spawnDomFunction(trampolineIsolate).then((sendPort) {
-      expect(sendPort.call('check'), completion('${window.location}'));
-    });
+    spawnDomFunction(trampolineIsolate).then(expectAsync1(
+        (sendPort) {
+            expect(sendPort.call('check'), completion('${window.location}'));
+        }
+    ));
   });
 
   test('Spawn DOM isolate from pure', () {
     expect(spawnFunction(trampolineIsolate).call('check'),
            completion('${window.location}'));
   });
 
+  test('Spawn DOM by uri', () {
+    spawnDomUri('dom_isolates_test.dart.child_isolate.dart').then(expectAsync1(
+        (sendPort) {
+            expect(sendPort.call('check'), completion('${window.location}'));
+        }
+    ));
+  });
+
   test('Not function', () {
       expect(() => spawnDomFunction(42), throws);
   });
 
   test('Not topLevelFunction', () {
     var closure = guardAsync(() {});
     expect(() => spawnDomFunction(closure), throws);
   });
 
   test('Masked local function', () {
     var local = 42;
     dummy() => print('Bad invocation of local function: $local');
     expect(() => spawnDomFunction(dummy), throws);
   });
 }