Auto merge of #11178 - mrmiywj:use-doc-base-URL, r=nox

Make Node::BaseURI use the document's base URL

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- [X] These changes fix #11145  (github issue number if applicable).

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components/script/dom/node.rs

@@ -1865,7 +1865,7 @@ impl NodeMethods for Node {
 
     // https://dom.spec.whatwg.org/#dom-node-baseuri
     fn BaseURI(&self) -> DOMString {
-        self.owner_doc().URL()
+        DOMString::from(self.owner_doc().base_url().as_str())
     }
 
     // https://dom.spec.whatwg.org/#dom-node-ownerdocument