Remove use of deprecated MessageLoop methods in ui.

ui/views/mouse_watcher.cc

 // Copyright 2014 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 "ui/views/mouse_watcher.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/event_types.h"
+#include "base/location.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/message_loop/message_loop.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "ui/events/event.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/event_handler.h"
 #include "ui/events/event_utils.h"
 #include "ui/views/event_monitor.h"
 
 namespace views {
 
 // Amount of time between when the mouse moves outside the Host's zone and when
 // the listener is notified.
@@ skipping 31 matching lines @@
   // Called when a mouse event we're interested is seen.
   void HandleMouseEvent(MouseWatcherHost::MouseEventType event_type) {
     // It's safe to use last_mouse_location() here as this function is invoked
     // during event dispatching.
     if (!host()->Contains(EventMonitor::GetLastMouseLocation(), event_type)) {
       if (event_type == MouseWatcherHost::MOUSE_PRESS) {
         NotifyListener();
       } else if (!notify_listener_factory_.HasWeakPtrs()) {
         // Mouse moved outside the host's zone, start a timer to notify the
         // listener.
-        base::MessageLoop::current()->PostDelayedTask(
-            FROM_HERE,
-            base::Bind(&Observer::NotifyListener,
-                       notify_listener_factory_.GetWeakPtr()),
+        base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
+            FROM_HERE, base::Bind(&Observer::NotifyListener,
+                                  notify_listener_factory_.GetWeakPtr()),
             event_type == MouseWatcherHost::MOUSE_MOVE
                 ? base::TimeDelta::FromMilliseconds(kNotifyListenerTimeMs)
                 : mouse_watcher_->notify_on_exit_time_);
       }
     } else {
       // Mouse moved quickly out of the host and then into it again, so cancel
       // the timer.
       notify_listener_factory_.InvalidateWeakPtrs();
     }
   }
@@ skipping 38 matching lines @@
 void MouseWatcher::Stop() {
   observer_.reset(NULL);
 }
 
 void MouseWatcher::NotifyListener() {
   observer_.reset(NULL);
   listener_->MouseMovedOutOfHost();
 }
 
 }  // namespace views