Merge remote-tracking branch 'origin/tracking' into custom

dom/webidl/Client.webidl

@@ -15,7 +15,9 @@ interface Client {
   readonly attribute DOMString id;
 
   [Throws]
-  void postMessage(any message, optional sequence<Transferable> transfer);
+  void postMessage(any message, sequence<object> transferable);
+  [Throws]
+  void postMessage(any message, optional StructuredSerializeOptions options);
 };
 
 [Exposed=ServiceWorker]

dom/webidl/DedicatedWorkerGlobalScope.webidl

@@ -16,7 +16,9 @@
  Exposed=DedicatedWorker]
 interface DedicatedWorkerGlobalScope : WorkerGlobalScope {
   [Throws]
-  void postMessage(any message, optional sequence<any> transfer);
+  void postMessage(any message, sequence<object> transfer);
+  [Throws]
+  void postMessage(any message, optional StructuredSerializeOptions options);
 
   attribute EventHandler onmessage;
 };

dom/webidl/MessagePort.webidl

@@ -10,7 +10,9 @@
 [Exposed=(Window,Worker,System)]
 interface MessagePort : EventTarget {
   [Throws]
-  void postMessage(any message, optional sequence<Transferable> transferable);
+  void postMessage(any message, sequence<object> transferable);
+  [Throws]
+  void postMessage(any message, optional StructuredSerializeOptions options);
 
   void start();
   void close();
@@ -19,3 +21,8 @@ interface MessagePort : EventTarget {
   attribute EventHandler onmessage;
 };
 // MessagePort implements Transferable;
+
+// Used to declare which objects should be transferred.
+dictionary StructuredSerializeOptions {
+  sequence<object> transfer = [];
+};

dom/webidl/ServiceWorker.webidl

@@ -19,9 +19,10 @@ interface ServiceWorker : EventTarget {
 
   attribute EventHandler onstatechange;
 
-  // FIXME(catalinb): Should inherit this from Worker.
   [Throws]
-  void postMessage(any message, optional sequence<Transferable> transferable);
+  void postMessage(any message, sequence<object> transferable);
+  [Throws]
+  void postMessage(any message, optional StructuredSerializeOptions options);
 };
 
 ServiceWorker implements AbstractWorker;

dom/webidl/Window.webidl

@@ -22,7 +22,6 @@ interface IID;
 interface nsIBrowserDOMWindow;
 interface nsIMessageBroadcaster;
 interface nsIDOMCrypto;
-typedef any Transferable;
 
 // http://www.whatwg.org/specs/web-apps/current-work/
 [PrimaryGlobal, LegacyUnenumerableNamedProperties, NeedResolve]
@@ -51,6 +50,7 @@ typedef any Transferable;
   [Throws] void stop();
   [Throws, CrossOriginCallable, UnsafeInPrerendering] void focus();
   [Throws, CrossOriginCallable] void blur();
+  [Replaceable, Pref="dom.window.event.enabled"] readonly attribute any event;
 
   // other browsing contexts
   [Replaceable, Throws, CrossOriginReadable] readonly attribute WindowProxy frames;
@@ -80,7 +80,9 @@ typedef any Transferable;
   [Throws, UnsafeInPrerendering] void print();
 
   [Throws, CrossOriginCallable, NeedsSubjectPrincipal]
-  void postMessage(any message, DOMString targetOrigin, optional sequence<Transferable> transfer);
+  void postMessage(any message, DOMString targetOrigin, optional sequence<object> transfer = []);
+  [Throws, CrossOriginCallable, NeedsSubjectPrincipal]
+  void postMessage(any message, optional WindowPostMessageOptions options);
 
   // also has obsolete members
 };
@@ -486,3 +488,7 @@ callback IdleRequestCallback = void (IdleDeadline deadline);
 partial interface Window {
   [ChromeOnly] readonly attribute boolean isSecureContextIfOpenerIgnored;
 };
+
+dictionary WindowPostMessageOptions : StructuredSerializeOptions {
+  USVString targetOrigin = "/";
+};

dom/webidl/WindowOrWorkerGlobalScope.webidl

@@ -44,6 +44,10 @@ interface WindowOrWorkerGlobalScope {
   Promise<ImageBitmap> createImageBitmap(ImageBitmapSource aImage);
   [Throws]
   Promise<ImageBitmap> createImageBitmap(ImageBitmapSource aImage, long aSx, long aSy, long aSw, long aSh);
+
+  // structured cloning
+  [Throws]
+  any structuredClone(any value, optional StructuredSerializeOptions options);
 };
 
 // https://fetch.spec.whatwg.org/#fetch-method

dom/webidl/Worker.webidl

@@ -19,7 +19,9 @@ interface Worker : EventTarget {
   void terminate();
 
   [Throws]
-  void postMessage(any message, optional sequence<any> transfer);
+  void postMessage(any message, sequence<object> transfer);
+  [Throws]
+  void postMessage(any message, optional StructuredSerializeOptions options);
 
   attribute EventHandler onmessage;
 };