net: move host_resolver files from net/base to net/dns

net/http/http_network_session.h

 // 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.
 
 #ifndef NET_HTTP_HTTP_NETWORK_SESSION_H_
 #define NET_HTTP_HTTP_NETWORK_SESSION_H_
 
 #include <set>
 #include "base/memory/ref_counted.h"
 #include "base/threading/non_thread_safe.h"
 #include "net/base/host_port_pair.h"
-#include "net/base/host_resolver.h"
 #include "net/base/net_export.h"
+#include "net/dns/host_resolver.h"
 #include "net/http/http_auth_cache.h"
 #include "net/http/http_stream_factory.h"
 #include "net/quic/quic_stream_factory.h"
 #include "net/spdy/spdy_session_pool.h"
 #include "net/ssl/ssl_client_auth_cache.h"
 
 namespace base {
 class Value;
 }
 
@@ skipping 165 matching lines @@
   SpdySessionPool spdy_session_pool_;
   scoped_ptr<HttpStreamFactory> http_stream_factory_;
   std::set<HttpResponseBodyDrainer*> response_drainers_;
 
   Params params_;
 };
 
 }  // namespace net
 
 #endif  // NET_HTTP_HTTP_NETWORK_SESSION_H_