DnsProbeJob: Differentiate network and DNS errors

net/dns/dns_test_util.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_DNS_DNS_TEST_UTIL_H_
 #define NET_DNS_DNS_TEST_UTIL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 162 matching lines @@
 static const int kT3TTL = 0x00000015;
 // +2 for the CNAME records, +1 for TXT record.
 static const unsigned kT3RecordCount = arraysize(kT3IpAddresses) + 3;
 
 class DnsClient;
 
 struct MockDnsClientRule {
   enum Result {
     FAIL_SYNC,   // Fail synchronously with ERR_NAME_NOT_RESOLVED.
     FAIL_ASYNC,  // Fail asynchronously with ERR_NAME_NOT_RESOLVED.
+    TIMEOUT,     // Fail asynchronously with ERR_DNS_TIMEOUT.
     EMPTY,       // Return an empty response.
     OK,          // Return a response with loopback address.
   };
 
   MockDnsClientRule(const std::string& prefix_arg,
                     uint16 qtype_arg,
                     Result result_arg)
       : result(result_arg), prefix(prefix_arg), qtype(qtype_arg) { }
 
   Result result;
   std::string prefix;
   uint16 qtype;
 };
 
 typedef std::vector<MockDnsClientRule> MockDnsClientRuleList;
 
 // Creates mock DnsClient for testing HostResolverImpl.
 scoped_ptr<DnsClient> CreateMockDnsClient(const DnsConfig& config,
                                           const MockDnsClientRuleList& rules);
 
 }  // namespace net
 
 #endif  // NET_DNS_DNS_TEST_UTIL_H_