Use a direct include of the message_loop header in base/.

base/message_loop/message_loop_proxy_impl_unittest.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 "base/message_loop/message_loop_proxy_impl.h"
 
 #include "base/bind.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/threading/thread.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 namespace base {
 
 class MessageLoopProxyImplTest : public testing::Test {
  public:
   void Release() const {
@@ skipping 100 matching lines @@
     test_thread->Start();
     message_loop_proxy = test_thread->message_loop_proxy();
   }
   bool ret = message_loop_proxy->PostTask(
       FROM_HERE,
       Bind(&MessageLoopProxyImplTest::AssertNotRun));
   EXPECT_FALSE(ret);
 }
 
 }  // namespace base