remove promise from corelib

tests/isolate/src/MandelIsolateTest.dart

 // Copyright (c) 2011, 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("MandelIsolateTest");
 #import('TestFramework.dart');
 
 final TERMINATION_MESSAGE = -1;
 final N = 100;
 final ISOLATES = 20;
 
 void test(TestExpectation expect) {
   final state = new MandelbrotState();
-  expect.completes(state._validated).then((result) {
+  expect.completes(state._validated.future).then((result) {
     Expect.isTrue(result);
     expect.succeeded();
   });
   for (int i = 0; i < Math.min(ISOLATES, N); i++) state.startClient(i);
 }
 
 
 class MandelbrotState {
 
   MandelbrotState() {
     _result = new List<List<int>>(N);
     _lineProcessedBy = new List<LineProcessorClient>(N);
     _sent = 0;
     _missing = N;
-    _validated = new Promise<bool>();
+    _validated = new Completer<bool>();
   }
 
   void startClient(int id) {
     assert(_sent < N);
     final client = new LineProcessorClient(this, id);
     client.processLine(_sent++);
   }
 
   void notifyProcessedLine(LineProcessorClient client, int y, List<int> line) {
     assert(_result[y] === null);
@@ skipping 28 matching lines @@
       }
       output.add("\n");
     }
     // print(output);
   }
 
   List<List<int>> _result;
   List<LineProcessorClient> _lineProcessedBy;
   int _sent;
   int _missing;
-  Promise<bool> _validated;
+  Completer<bool> _validated;
 }
 
 
 class LineProcessorClient {
 
   LineProcessorClient(MandelbrotState this._state, int this._id) {
     _out = new LineProcessor().spawn();
   }
 
   void processLine(int y) {
@@ skipping 57 matching lines @@
       result[x] = i;
     }
     return result;
   }
 
 }
 
 main() {
   runTests([test]);
 }