Revert 113282 - Isolates generic DnsClient from AsyncHostResolver.

net/dns/dns_test_util.cc

 // Copyright (c) 2011 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/dns_test_util.h"
 
 #include "base/message_loop.h"
 
 namespace net {
 
+TestPrng::TestPrng(const std::deque<int>& numbers) : numbers_(numbers) {
+}
+
+TestPrng::~TestPrng() {
+}
+
+int TestPrng::GetNext(int min, int max) {
+  DCHECK(!numbers_.empty());
+  int rv = numbers_.front();
+  numbers_.pop_front();
+  DCHECK(rv >= min && rv <= max);
+  return rv;
+}
+
 bool ConvertStringsToIPAddressList(
     const char* const ip_strings[], size_t size, IPAddressList* address_list) {
   DCHECK(address_list);
   IPAddressList ip_addresses;
   for (size_t i = 0; i < size; ++i) {
     IPAddressNumber ip;
     if (!ParseIPLiteralToNumber(ip_strings[i], &ip))
       return false;
     ip_addresses.push_back(ip);
   }
   address_list->swap(ip_addresses);
   return true;
 }
 
 bool CreateDnsAddress(
     const char* ip_string, uint16 port, IPEndPoint* endpoint) {
   DCHECK(endpoint);
   IPAddressNumber ip_address;
   if (!ParseIPLiteralToNumber(ip_string, &ip_address))
     return false;
   *endpoint = IPEndPoint(ip_address, port);
   return true;
 }
 
 }  // namespace net