net: plumb DnsRRResolver from IOThread to HttpNetworkSession.

net/socket/ssl_client_socket_pool_unittest.cc

Index: net/socket/ssl_client_socket_pool_unittest.cc
diff --git a/net/socket/ssl_client_socket_pool_unittest.cc b/net/socket/ssl_client_socket_pool_unittest.cc
index 91290bbe63a8a28e45e06cc1e4dd1514c350bbb5..2cc564bf645fdcfa9a7e356eb55a87df9c7eeeea 100644
--- a/net/socket/ssl_client_socket_pool_unittest.cc
+++ b/net/socket/ssl_client_socket_pool_unittest.cc
@@ -39,6 +39,7 @@ class SSLClientSocketPoolTest : public testing::Test {
         http_auth_handler_factory_(HttpAuthHandlerFactory::CreateDefault(
             host_resolver_.get())),
         session_(new HttpNetworkSession(host_resolver_.get(),
+                                        NULL /* dnsrr_resolver */,
                                         ProxyService::CreateDirect(),
                                         &socket_factory_,
                                         new SSLConfigServiceDefaults,
@@ -92,6 +93,7 @@ class SSLClientSocketPoolTest : public testing::Test {
         kMaxSocketsPerGroup,
         ssl_histograms_.get(),
         NULL,
+        NULL /* dnsrr_resolver */,
         &socket_factory_,
         tcp_pool ? &tcp_socket_pool_ : NULL,
         socks_pool ? &socks_socket_pool_ : NULL,