Add HttpProtocolHandler and convert everything to use it

net/url_request/url_request_ftp_job_unittest.cc

Index: net/url_request/url_request_ftp_job_unittest.cc
diff --git a/net/url_request/url_request_ftp_job_unittest.cc b/net/url_request/url_request_ftp_job_unittest.cc
index 6f2642106cf96b91391bfb86575fcd4406395409..c716eef96ffd792408e04e22fac5458de613645e 100644
--- a/net/url_request/url_request_ftp_job_unittest.cc
+++ b/net/url_request/url_request_ftp_job_unittest.cc
@@ -78,7 +78,8 @@ class FtpTestURLRequestContext : public TestURLRequestContext {
     context_storage_.set_proxy_service(std::move(proxy_service));
     set_network_delegate(network_delegate);
     std::unique_ptr<URLRequestJobFactoryImpl> job_factory =
-        base::WrapUnique(new URLRequestJobFactoryImpl);
+        URLRequestJobFactoryImpl::CreateWithHttpProtocolHandlers();
+
     job_factory->SetProtocolHandler("ftp",
                                     base::WrapUnique(ftp_protocol_handler_));
     context_storage_.set_job_factory(std::move(job_factory));