No longer preconnect to unsafe ports.

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
===================================================================
--- net/url_request/url_request_http_job.cc	(revision 113620)
+++ net/url_request/url_request_http_job.cc	(working copy)
@@ -167,10 +167,6 @@
                                           const std::string& scheme) {
   DCHECK(scheme == "http" || scheme == "https");
 
-  int port = request->url().IntPort();
-  if (!IsPortAllowedByDefault(port) && !IsPortAllowedByOverride(port))
-    return new URLRequestErrorJob(request, ERR_UNSAFE_PORT);
-
   if (!request->context() ||
       !request->context()->http_transaction_factory()) {
     NOTREACHED() << "requires a valid context";