Auto merge of #22638 - CYBAI:urlsearchparams-sort, r=nox

Implement URLSearchParams.prototype.sort()

---
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes fix #22545
- [x] There are tests for these changes

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components/script/dom/urlsearchparams.rs

@@ -168,6 +168,17 @@ impl URLSearchParamsMethods for URLSearchParams {
         self.update_steps();
     }
 
+    // https://url.spec.whatwg.org/#dom-urlsearchparams-sort
+    fn Sort(&self) {
+        // Step 1.
+        self.list
+            .borrow_mut()
+            .sort_by(|(a, _), (b, _)| a.encode_utf16().cmp(b.encode_utf16()));
+
+        // Step 2.
+        self.update_steps();
+    }
+
     // https://url.spec.whatwg.org/#stringification-behavior
     fn Stringifier(&self) -> DOMString {
         DOMString::from(self.serialize_utf8())
@@ -182,9 +193,7 @@ impl URLSearchParams {
             .extend_pairs(&*list)
             .finish()
     }
-}
 
-impl URLSearchParams {
     // https://url.spec.whatwg.org/#concept-urlsearchparams-update
     fn update_steps(&self) {
         if let Some(url) = self.url.root() {

components/script/dom/webidls/URLSearchParams.webidl

@@ -16,6 +16,9 @@ interface URLSearchParams {
   sequence<USVString> getAll(USVString name);
   boolean has(USVString name);
   void set(USVString name, USVString value);
+
+  void sort();
+
   // Be careful with implementing iterable interface.
   // Search params might be mutated by URL::SetSearch while iterating (discussed in PR #10351).
   iterable<USVString, USVString>;