diff --git a/chrome_frame/delete_chrome_history.cc b/chrome_frame/delete_chrome_history.cc
index e2476af5cd7af1..c83944ce834cf5 100644
--- a/chrome_frame/delete_chrome_history.cc
+++ b/chrome_frame/delete_chrome_history.cc
@@ -91,7 +91,7 @@ STDMETHODIMP DeleteChromeHistory::DeleteBrowsingHistory(DWORD flags) {
     remove_mask_ |= BrowsingDataRemover::REMOVE_HISTORY;
 
   loop_.PostDelayedTask(FROM_HERE,
-      new MessageLoop::QuitTask, 1000 * 600);
+      MessageLoop::QuitClosure(), 1000 * 600);
   loop_.MessageLoop::Run();
 
   return S_OK;
diff --git a/chrome_frame/test/chrome_frame_automation_mock.cc b/chrome_frame/test/chrome_frame_automation_mock.cc
index 4da64bc4be12b5..966a176d723560 100644
--- a/chrome_frame/test/chrome_frame_automation_mock.cc
+++ b/chrome_frame/test/chrome_frame_automation_mock.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -16,7 +16,7 @@ TEST(ChromeFrame, FLAKY_Launch) {
   MessageLoopForUI loop;
   AutomationMockLaunch mock_launch(&loop, kLongWaitTimeout);
 
-  loop.PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask, kLongWaitTimeout);
+  loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(), kLongWaitTimeout);
 
   mock_launch.Navigate("about:blank");
   loop.RunWithDispatcher(NULL);
@@ -27,7 +27,7 @@ TEST(ChromeFrame, Navigate) {
   MessageLoopForUI loop;
   AutomationMockNavigate mock_navigate(&loop, kLongWaitTimeout);
 
-  loop.PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask, kLongWaitTimeout);
+  loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(), kLongWaitTimeout);
 
   mock_navigate.NavigateRelativeFile(L"postmessage_basic_frame.html");
   loop.RunWithDispatcher(NULL);
@@ -38,7 +38,7 @@ TEST(ChromeFrame, PostMessage) {
   MessageLoopForUI loop;
   AutomationMockPostMessage mock_postmessage(&loop, kLongWaitTimeout);
 
-  loop.PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask, kLongWaitTimeout);
+  loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(), kLongWaitTimeout);
 
   mock_postmessage.NavigateRelativeFile(L"postmessage_basic_frame.html");
   loop.RunWithDispatcher(NULL);
@@ -52,7 +52,7 @@ TEST(ChromeFrame, FLAKY_RequestStart) {
   AutomationMockHostNetworkRequestStart mock_request_start(&loop,
                                                            kLongWaitTimeout);
 
-  loop.PostDelayedTask(FROM_HERE, new MessageLoop::QuitTask, kLongWaitTimeout);
+  loop.PostDelayedTask(FROM_HERE, MessageLoop::QuitClosure(), kLongWaitTimeout);
 
   mock_request_start.NavigateRelative(L"postmessage_basic_frame.html");
   loop.RunWithDispatcher(NULL);
diff --git a/chrome_frame/test/chrome_frame_automation_mock.h b/chrome_frame/test/chrome_frame_automation_mock.h
index 739f9043d36f13..ce3c35158a18d1 100644
--- a/chrome_frame/test/chrome_frame_automation_mock.h
+++ b/chrome_frame/test/chrome_frame_automation_mock.h
@@ -137,7 +137,7 @@ class AutomationMockDelegate
   void QuitMessageLoop() {
     // Quit on the caller message loop has to be called on the caller
     // thread.
-    caller_message_loop_->PostTask(FROM_HERE, new MessageLoop::QuitTask);
+    caller_message_loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
   }
 
  private:
diff --git a/chrome_frame/test/net/fake_external_tab.cc b/chrome_frame/test/net/fake_external_tab.cc
index 5a7d3714eb49fb..931e2a900aa06a 100644
--- a/chrome_frame/test/net/fake_external_tab.cc
+++ b/chrome_frame/test/net/fake_external_tab.cc
@@ -451,7 +451,7 @@ void CFUrlRequestUnittestRunner::TakeDownBrowser(
 
   me->ShutDownHostBrowser();
   me->fake_chrome_.ui_loop()->PostDelayedTask(FROM_HERE,
-                                              new MessageLoop::QuitTask,
+                                              MessageLoop::QuitClosure(),
                                               TestTimeouts::tiny_timeout_ms());
 }
 
diff --git a/chrome_frame/test/test_server_test.cc b/chrome_frame/test/test_server_test.cc
index 4175d22eda0111..504a3dffee42ba 100644
--- a/chrome_frame/test/test_server_test.cc
+++ b/chrome_frame/test/test_server_test.cc
@@ -124,7 +124,7 @@ struct QuitMessageHit {
 
 void QuitMessageLoop(QuitMessageHit* msg) {
   msg->hit_ = true;
-  msg->loop_->PostTask(FROM_HERE, new MessageLoop::QuitTask);
+  msg->loop_->PostTask(FROM_HERE, MessageLoop::QuitClosure());
 }
 
 }  // end namespace
diff --git a/chrome_frame/test/test_with_web_server.cc b/chrome_frame/test/test_with_web_server.cc
index a044b71522d002..75dada872995a1 100644
--- a/chrome_frame/test/test_with_web_server.cc
+++ b/chrome_frame/test/test_with_web_server.cc
@@ -299,7 +299,7 @@ void MockWebServer::HandlePostedResponse(
   posted_result_ = request.content();
   if (posted_result_ == expected_result_) {
     MessageLoop::current()->PostDelayedTask(FROM_HERE,
-                                            new MessageLoop::QuitTask,
+                                            MessageLoop::QuitClosure(),
                                             100);
   }
   connection->Send("HTTP/1.1 200 OK\r\n", "");