Remove interface probing for IPv6 support from HostResolverImpl

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"
@@ skipping 1259 matching lines @@
     AddDnsRule("4nx", dns_protocol::kTypeA, MockDnsClientRule::OK);
     AddDnsRule("4nx", dns_protocol::kTypeAAAA, MockDnsClientRule::FAIL_ASYNC);
     CreateResolver();
   }
 
   void CreateResolver() {
     resolver_.reset(new HostResolverImpl(HostCache::CreateDefaultCache(),
                                          DefaultLimits(),
                                          DefaultParams(proc_.get()),
                                          NULL));
+    // Disable IPv6 support probing.
+    resolver_->SetDefaultAddressFamily(ADDRESS_FAMILY_UNSPECIFIED);
     resolver_->SetDnsClient(CreateMockDnsClient(DnsConfig(), dns_rules_));
   }
 
   // Adds a rule to |dns_rules_|. Must be followed by |CreateResolver| to apply.
   void AddDnsRule(const std::string& prefix,
                   uint16 qtype,
                   MockDnsClientRule::Result result) {
     dns_rules_.push_back(MockDnsClientRule(prefix, qtype, result));
   }
 
@@ skipping 351 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