Use a direct include of the message_loop header in chrome/test/, chrome/tools/, chrome/utility/.

chrome/tools/ipclist/ipcfuzz.cc

 // Copyright (c) 2012 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 <algorithm>
 #include <ostream>
 #include <set>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/containers/hash_tables.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/singleton.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/pickle.h"
 #include "base/process_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/time/time.h"
 #include "chrome/common/all_messages.h"
 #include "content/common/all_messages.h"
 #include "ipc/ipc_message.h"
@@ skipping 657 matching lines @@
 
 // Entry point avoiding mangled names.
 extern "C" {
   __attribute__((visibility("default")))
   IPC::ChannelProxy::OutgoingMessageFilter* GetFilter(void);
 }
 
 IPC::ChannelProxy::OutgoingMessageFilter* GetFilter(void) {
   return &g_ipcfuzz;
 }