Add HttpProtocolHandler and convert everything to use it

headless/lib/browser/headless_url_request_context_getter.cc

Index: headless/lib/browser/headless_url_request_context_getter.cc
diff --git a/headless/lib/browser/headless_url_request_context_getter.cc b/headless/lib/browser/headless_url_request_context_getter.cc
index 1a46e1064a116d43715ee627f58e612ded227c39..88587f4414cc36ed12eb6699b3734fdf1a113901 100644
--- a/headless/lib/browser/headless_url_request_context_getter.cc
+++ b/headless/lib/browser/headless_url_request_context_getter.cc
@@ -181,8 +181,8 @@ HeadlessURLRequestContextGetter::GetURLRequestContext() {
         storage_->http_network_session(), std::move(main_backend),
         true /* set_up_quic_server_info */)));
 
-    std::unique_ptr<net::URLRequestJobFactoryImpl> job_factory(
-        new net::URLRequestJobFactoryImpl());
+    std::unique_ptr<net::URLRequestJobFactoryImpl> job_factory =
+        net::URLRequestJobFactoryImpl::CreateWithDefaultProtocolHandlers();
 
     InstallProtocolHandlers(job_factory.get(), &protocol_handlers_);
     bool set_protocol = job_factory->SetProtocolHandler(