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

net/dns/host_resolver_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 "net/dns/host_resolver_impl.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_vector.h"
-#include "base/message_loop.h"
+#include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/test/test_timeouts.h"
 #include "base/time/time.h"
 #include "net/base/address_list.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
 #include "net/dns/dns_client.h"
@@ skipping 1616 matching lines @@
   ChangeDnsConfig(config);
   req = CreateRequest(info);
   // Expect synchronous resolution from DnsHosts.
   EXPECT_EQ(OK, req->Resolve());
 
   EXPECT_EQ(saw_ipv4, req->HasAddress("127.0.0.1", 80));
   EXPECT_EQ(saw_ipv6, req->HasAddress("::1", 80));
 }
 
 }  // namespace net