Remove use of deprecated MessageLoop methods in chrome/.

chrome/browser/metrics/thread_watcher.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 "chrome/browser/metrics/thread_watcher.h"
 
 #include <math.h>  // ceil
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
@@ skipping 133 matching lines @@
   // Send a ping message to the watched thread. Callback will be called on
   // the WatchDogThread.
   base::Closure callback(
       base::Bind(&ThreadWatcher::OnPongMessage, weak_ptr_factory_.GetWeakPtr(),
                  ping_sequence_number_));
   if (watched_runner_->PostTask(
           FROM_HERE,
           base::Bind(&ThreadWatcher::OnPingMessage, thread_id_,
                      callback))) {
       // Post a task to check the responsiveness of watched thread.
-      base::MessageLoop::current()->PostDelayedTask(
+      base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
           FROM_HERE,
           base::Bind(&ThreadWatcher::OnCheckResponsiveness,
                      weak_ptr_factory_.GetWeakPtr(), ping_sequence_number_),
           unresponsive_time_);
   } else {
     // Watched thread might have gone away, stop watching it.
     DeActivateThreadWatching();
   }
 }
 
@@ skipping 835 matching lines @@
 
 #if defined(OS_WIN)
   // On Windows XP, give twice the time for shutdown.
   if (base::win::GetVersion() <= base::win::VERSION_XP)
     actual_duration *= 2;
 #endif
 
   shutdown_watchdog_ = new ShutdownWatchDogThread(actual_duration);
   shutdown_watchdog_->Arm();
 }