Pass the Document's origin to its constructor.

CC #10963.

components/script/dom/servoparser/mod.rs

@@ -106,6 +106,7 @@ impl ServoParser {
         // Step 1.
         let loader = DocumentLoader::new(&*context_document.loader());
         let document = Document::new(window, None, Some(url.clone()),
+                                     context_document.origin().alias(),
                                      IsHTMLDocument::HTMLDocument,
                                      None, None,
                                      DocumentSource::FromParser,