Adds HostResolveImpl Requests and Jobs to log.

net/url_request/url_request_unittest.h

Index: net/url_request/url_request_unittest.h
===================================================================
--- net/url_request/url_request_unittest.h	(revision 57182)
+++ net/url_request/url_request_unittest.h	(working copy)
@@ -125,14 +125,16 @@
  public:
   TestURLRequestContext() {
     host_resolver_ =
-        net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism);
+        net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
+                                      NULL);
     proxy_service_ = net::ProxyService::CreateNull();
     Init();
   }
 
   explicit TestURLRequestContext(const std::string& proxy) {
     host_resolver_ =
-        net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism);
+        net::CreateSystemHostResolver(net::HostResolver::kDefaultParallelism,
+                                      NULL);
     net::ProxyConfig proxy_config;
     proxy_config.proxy_rules().ParseFromString(proxy);
     proxy_service_ = net::ProxyService::CreateFixed(proxy_config);