Remove old isolate API and update all code in the repository to use

tests/isolate/count_test.dart

-// Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
+// 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("CountTest");
 #import('dart:isolate');
 #import('../../lib/unittest/unittest.dart');
 
-class TestIsolate extends Isolate {
-
-  TestIsolate() : super();
-
-  void main() {
-    int count = 0;
-    this.port.receive((int message, SendPort replyTo) {
-      if (message == -1) {
-        Expect.equals(10, count);
-        replyTo.send(-1, null);
-        this.port.close();
-        return;
-      }
-
-      Expect.equals(count, message);
-      count++;
-      replyTo.send(message * 2, null);
-    });
-  }
+void countMessages() {
+  int count = 0;
+  port.receive((int message, SendPort replyTo) {
+    if (message == -1) {
+      Expect.equals(10, count);
+      replyTo.send(-1, null);
+      port.close();
+      return;
+    }
+    Expect.equals(count, message);
+    count++;
+    replyTo.send(message * 2, null);
+  });
 }
 
 void main() {
   test("count 10 consecutive messages", () {
     int count = 0;
-    new TestIsolate().spawn().then(expectAsync1((SendPort remote) {
-      ReceivePort local = new ReceivePort();
-      SendPort reply = local.toSendPort();
+    SendPort remote = spawnFunction(countMessages);
+    ReceivePort local = new ReceivePort();
+    SendPort reply = local.toSendPort();
 
-      local.receive(expectAsync2((int message, SendPort replyTo) {
-        if (message == -1) {
-          Expect.equals(11, count);
-          local.close();
-          return;
-        }
+    local.receive(expectAsync2((int message, SendPort replyTo) {
+      if (message == -1) {
+        Expect.equals(11, count);
+        local.close();
+        return;
+      }
 
-        Expect.equals((count - 1) * 2, message);
-        remote.send(count++, reply);
-        if (count == 10) {
-          remote.send(-1, reply);
-        }
-      }, count: 11));
+      Expect.equals((count - 1) * 2, message);
       remote.send(count++, reply);
-    }));
+      if (count == 10) {
+        remote.send(-1, reply);
+      }
+    }, count: 11));
+    remote.send(count++, reply);
   });
 }