Enables clean VM shutdown.

runtime/vm/message_handler_test.cc

 // 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.
 
 #include "vm/message_handler.h"
 #include "vm/port.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
@@ skipping 270 matching lines @@
   MessageHandlerTestPeer handler_peer(handler);
   for (int i = 0; i < info->count; i++) {
     Message* message =
         new Message(info->ports[i], NULL, 0, Message::kNormalPriority);
     handler_peer.PostMessage(message);
   }
 }
 
 
 UNIT_TEST_CASE(MessageHandler_Run) {
-  ThreadPool pool;
   TestMessageHandler handler;
   MessageHandlerTestPeer handler_peer(&handler);
   int sleep = 0;
   const int kMaxSleep = 20 * 1000;  // 20 seconds.
 
   EXPECT(!handler.HasLivePorts());
   handler_peer.increment_live_ports();
 
-  handler.Run(&pool,
-              TestStartFunction,
+  handler.Run(TestStartFunction,
               TestEndFunction,
               reinterpret_cast<uword>(&handler));
   Dart_Port port = PortMap::CreatePort(&handler);
   Message* message = new Message(port, NULL, 0, Message::kNormalPriority);
   handler_peer.PostMessage(message);
 
   // Wait for the first message to be handled.
   while (sleep < kMaxSleep && handler.message_count() < 1) {
     OS::Sleep(10);
     sleep += 10;
@@ skipping 25 matching lines @@
   EXPECT_EQ(port, handler_ports[0]);
   for (int i = 1; i < 11; i++) {
     EXPECT_EQ(ports[i - 1], handler_ports[i]);
   }
   handler_peer.decrement_live_ports();
   EXPECT(!handler.HasLivePorts());
   PortMap::ClosePorts(&handler);
 }
 
 }  // namespace dart