Remove calls to deprecated MessageLoop methods in base.

base/test/sequenced_worker_pool_owner.cc

 // Copyright (c) 2012 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.
 
 #include "base/test/sequenced_worker_pool_owner.h"
 
 #include "base/location.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
 
@@ skipping 36 matching lines @@
 void SequencedWorkerPoolOwner::WillWaitForShutdown() {
   if (!will_wait_for_shutdown_callback_.is_null()) {
     will_wait_for_shutdown_callback_.Run();
 
     // Release the reference to the callback to prevent retain cycles.
     will_wait_for_shutdown_callback_ = Closure();
   }
 }
 
 void SequencedWorkerPoolOwner::OnDestruct() {
-  constructor_message_loop_->PostTask(FROM_HERE, exit_loop_.QuitClosure());
+  constructor_message_loop_->task_runner()->PostTask(FROM_HERE,
+                                                     exit_loop_.QuitClosure());
 }
 
 }  // namespace base