Revert 151586 - [net/dns] Resolve AF_UNSPEC on dual-stacked systems. Sort addresses according to RF…

net/base/host_resolver_impl.h

Index: net/base/host_resolver_impl.h
===================================================================
--- net/base/host_resolver_impl.h	(revision 151599)
+++ net/base/host_resolver_impl.h	(working copy)
@@ -19,17 +19,14 @@
 #include "net/base/host_resolver.h"
 #include "net/base/host_resolver_proc.h"
 #include "net/base/net_export.h"
+#include "net/base/net_log.h"
 #include "net/base/network_change_notifier.h"
 #include "net/base/prioritized_dispatcher.h"
+#include "net/dns/dns_client.h"
+#include "net/dns/dns_config_service.h"
 
 namespace net {
 
-class BoundNetLog;
-class DnsClient;
-struct DnsConfig;
-class DnsConfigService;
-class NetLog;
-
 // For each hostname that is requested, HostResolver creates a
 // HostResolverImpl::Job. When this job gets dispatched it creates a ProcTask
 // which runs the given HostResolverProc on a WorkerPool thread. If requests for