Add missing IWYU message_loop.h includes.

ui/events/ozone/evdev/event_thread_evdev.cc

 // Copyright 2015 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/events/ozone/evdev/event_thread_evdev.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/logging.h"
+#include "base/message_loop/message_loop.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
 #include "ui/events/ozone/evdev/device_event_dispatcher_evdev.h"
 #include "ui/events/ozone/evdev/input_device_factory_evdev.h"
 #include "ui/events/ozone/evdev/input_device_factory_evdev_proxy.h"
 
 namespace ui {
 
@@ skipping 59 matching lines @@
   TRACE_EVENT0("evdev", "EventThreadEvdev::Start");
   thread_.reset(new EvdevThread(std::move(dispatcher), cursor, callback));
   base::Thread::Options thread_options;
   thread_options.message_loop_type = base::MessageLoop::TYPE_UI;
   thread_options.priority = base::ThreadPriority::DISPLAY;
   if (!thread_->StartWithOptions(thread_options))
     LOG(FATAL) << "Failed to create input thread";
 }
 
 }  // namespace ui