Auto merge of #13422 - SecurityInsanity:master, r=KiChjang

Make Assign throw error on invalid url

Step 2 of: https://html.spec.whatwg.org/multipage/browsers.html#dom-location-assign says we should throw an error. This makes it do that.

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #13420  (github issue number if applicable).
- [x] There are tests for these changes

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components/script/dom/webidls/Location.webidl

@@ -14,6 +14,7 @@
            attribute USVString search;
            attribute USVString hash;
 
+  [Throws]
   void assign(USVString url);
   //void replace(USVString url);
   void reload();