Use a direct include of the message_loop header in ui/, part 1.

ui/base/test/ui_controls_gtk.cc

 // Copyright 2013 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/base/test/ui_controls.h"
 
 #include <gdk/gdkkeysyms.h>
 #include <gtk/gtk.h>
 
 #include "base/bind.h"
 #include "base/logging.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "ui/base/gtk/event_synthesis_gtk.h"
 #include "ui/base/gtk/gtk_screen_util.h"
 #include "ui/gfx/rect.h"
 
 namespace {
 bool g_ui_controls_enabled = false;
 
 // static
 guint32 XTimeNow() {
   struct timespec ts;
@@ skipping 229 matching lines @@
   new EventWaiter(task, wait_type, 1);
   return rv;
 }
 
 bool SendMouseClick(MouseButton type) {
   CHECK(g_ui_controls_enabled);
   return SendMouseEvents(type, UP | DOWN);
 }
 
 }  // namespace ui_controls