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

ui/base/test/ui_controls_mac.mm

 // 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"
 
 #import <Cocoa/Cocoa.h>
 #include <mach/mach_time.h>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "ui/base/keycodes/keyboard_code_conversion_mac.h"
 
 
 // Implementation details: We use [NSApplication sendEvent:] instead
 // of [NSApplication postEvent:atStart:] so that the event gets sent
 // immediately.  This lets us run the post-event task right
 // immediately as well.  Unfortunately I cannot subclass NSEvent (it's
 // probably a class cluster) to allow other easy answers.  For
 // example, if I could subclass NSEvent, I could run the Task in it's
 // dealloc routine (which necessarily happens after the event is
@@ skipping 340 matching lines @@
 
   return true;
 }
 
 bool SendMouseClick(MouseButton type) {
   CHECK(g_ui_controls_enabled);
   return SendMouseEventsNotifyWhenDone(type, UP|DOWN, base::Closure());
 }
 
 }  // namespace ui_controls