Add Isolate.kill().

tests/isolate/kill_test.dart

 // Copyright (c) 2014, 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.
 
 import "dart:isolate";
 import "dart:async";
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 
 isomain1(replyPort) {
   RawReceivePort port = new RawReceivePort();
   port.handler = (v) {
     replyPort.send(v);
     if (v == 0) port.close();
   };
   replyPort.send(port.sendPort);
 }
 
 void main() {
   asyncStart();
   var completer = new Completer();  // Completed by first reply from isolate.
   RawReceivePort reply = new RawReceivePort(completer.complete);
   Isolate.spawn(isomain1, reply.sendPort).then((Isolate isolate) {
-    List result = [];
-    completer.future.then((echoPort) {
+    completer.future.then((SendPort echoPort) {
+      List result = [];
       reply.handler = (v) {
         result.add(v);
-        if (v == 0) {
-          Expect.listEquals([4, 3, 2, 1, 0], result);
-          reply.close();
-          asyncEnd();
+        if (v == 2) {
+          isolate.kill(Isolate.IMMEDIATE);
         }
+        echoPort.send(v - 1);
       };
+      RawReceivePort exitSignal;
+      exitSignal = new RawReceivePort((_) {
+        Expect.listEquals([4, 3, 2], result);
+        exitSignal.close();
+        reply.close();
+        asyncEnd();
+      });
+      isolate.addOnExitListener(exitSignal.sendPort);
       echoPort.send(4);
-      echoPort.send(3);
-      Capability resume = isolate.pause();
-      var pingPort = new RawReceivePort();
-      pingPort.handler = (_) {
-        Expect.isTrue(result.length <= 2);
-        echoPort.send(0);
-        isolate.resume(resume);
-        pingPort.close();
-      };
-      isolate.ping(pingPort.sendPort, Isolate.PING_CONTROL);
-      echoPort.send(2);
-      echoPort.send(1);
     });
   });
 }