Extracting NetLog inner classes into their own classes.

content/browser/loader/resource_hints_impl.cc

 // Copyright 2016 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 <string>
+
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/resource_context.h"
 #include "content/public/browser/resource_hints.h"
 #include "net/base/address_list.h"
 #include "net/base/load_flags.h"
 #include "net/dns/host_resolver.h"
 #include "net/http/http_network_session.h"
 #include "net/http/http_request_info.h"
 #include "net/http/http_stream_factory.h"
 #include "net/http/http_transaction_factory.h"
+#include "net/log/net_log_with_source.h"
 #include "net/url_request/http_user_agent_settings.h"
 #include "net/url_request/url_request_context.h"
 
 namespace content {
 
 namespace {
 
 class RequestHolder {
  public:
   std::unique_ptr<net::HostResolver::Request>* GetRequest() {
@@ skipping 69 matching lines @@
   net::HostResolver::RequestInfo resolve_info(net::HostPortPair::FromURL(url));
   resolve_info.set_is_speculative(true);
   return resolver->Resolve(
       resolve_info, net::IDLE, addresses,
       base::Bind(&OnResolveComplete, base::Owned(request_holder),
                  base::Owned(addresses), callback),
       request_holder->GetRequest(), net::NetLogWithSource());
 }
 
 }  // namespace content