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

webkit/browser/fileapi/timed_task_helper_unittest.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 "base/basictypes.h"
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/time/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/browser/fileapi/timed_task_helper.h"
 
 namespace fileapi {
 
 namespace {
 
 class Embedder {
@@ skipping 54 matching lines @@
 
     ASSERT_TRUE(embedder.timer()->IsRunning());
   }
 
   // At this point the callback is still in the message queue but
   // embedder is gone.
   base::MessageLoop::current()->RunUntilIdle();
 }
 
 }  // namespace fileapi