[net/dns] Refactoring of job dispatch in HostResolverImpl in preparation for DnsTransactionFactory.

chrome/browser/net/connection_tester.cc

Index: chrome/browser/net/connection_tester.cc
diff --git a/chrome/browser/net/connection_tester.cc b/chrome/browser/net/connection_tester.cc
index 6aa1e9a8c438e6f5b932f00c4b2b88cb5ae5eaf4..61c6f63b67b1669d452999f52cf6eb13a30034e3 100644
--- a/chrome/browser/net/connection_tester.cc
+++ b/chrome/browser/net/connection_tester.cc
@@ -17,7 +17,6 @@
 #include "net/base/cert_verifier.h"
 #include "net/base/cookie_monster.h"
 #include "net/base/host_resolver.h"
-#include "net/base/host_resolver_impl.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/net_util.h"
@@ -110,9 +109,10 @@ class ExperimentURLRequestContext : public net::URLRequestContext {
     // Create a vanilla HostResolver that disables caching.
     const size_t kMaxJobs = 50u;
     const size_t kMaxRetryAttempts = 4u;
-    net::HostResolverImpl* impl =
-        new net::HostResolverImpl(NULL, NULL, kMaxJobs, kMaxRetryAttempts,
-                                  NULL);
+    net::HostResolver* impl = net::CreateNonCachingSystemHostResolver(
+        kMaxJobs,
+        kMaxRetryAttempts,
+        NULL /* NetLog */);
 
     host_resolver->reset(impl);