Auto merge of #8812 - jitendra29:support-withCredentials, r=jdm

M1504: Implement basic support for withCredentials API

The pull request includes the following task:

* Implemented basic network-level support by adding a member to LoadData that is used by http_loader.rs to conditionally exclude cookies from the HTTP request if the flag is false (default true)

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components/script/dom/xmlhttprequest.rs

@@ -516,6 +516,9 @@ impl XMLHttpRequestMethods for XMLHttpRequest {
         let global = self.global.root();
         let pipeline_id = global.r().pipeline();
         let mut load_data = LoadData::new(self.request_url.borrow().clone().unwrap(), Some(pipeline_id));
+        if load_data.url.origin().ne(&global.r().get_url().origin()) {
+            load_data.credentials_flag = self.WithCredentials();
+        }
         load_data.data = extracted;
 
         #[inline]

components/script/script_task.rs

@@ -2013,6 +2013,7 @@ impl ScriptTask {
             data: load_data.data,
             cors: None,
             pipeline_id: Some(id),
+            credentials_flag: true,
         }, LoadConsumer::Listener(response_target), None)).unwrap();
 
         self.incomplete_loads.borrow_mut().push(incomplete);