Removed static factories for data, ftp, file, and about jobs.

net/url_request/url_request_about_job.cc

Index: net/url_request/url_request_about_job.cc
diff --git a/net/url_request/url_request_about_job.cc b/net/url_request/url_request_about_job.cc
index d234a51b28371c5a3ddc364657a99213f8e6215b..7c7251d14e65730567b248b748e0bc6096b6fc34 100644
--- a/net/url_request/url_request_about_job.cc
+++ b/net/url_request/url_request_about_job.cc
@@ -20,13 +20,6 @@ URLRequestAboutJob::URLRequestAboutJob(URLRequest* request,
       weak_factory_(this) {
 }
 
-// static
-URLRequestJob* URLRequestAboutJob::Factory(URLRequest* request,
-                                           NetworkDelegate* network_delegate,
-                                           const std::string& scheme) {
-  return new URLRequestAboutJob(request, network_delegate);
-}
-
 void URLRequestAboutJob::Start() {
   // Start reading asynchronously so that all error reporting and data
   // callbacks happen as they would for network requests.