Bug 982726 - Patch 2 - Add postMessage to service worker. r=baku

--HG--
extra : amend_source : e69a2f5438b485ff2819c633047c0cb46f663d01
extra : transplant_source : %96%CE%FC%C8J%EEm%9B%DA%CCZIlK5%9E%EB%99%D3%F3

dom/webidl/ServiceWorker.webidl

@@ -8,8 +8,6 @@
  *
  */
 
-// Still unclear what should be subclassed.
-// https://github.com/slightlyoff/ServiceWorker/issues/189
 [Pref="dom.serviceWorkers.enabled",
  // XXXbz I have no idea where this should be exposed.  The spec makes
  // no sense.  But since it's got a pref, let's say window.
@@ -20,6 +18,10 @@ interface ServiceWorker : EventTarget {
 
   readonly attribute ServiceWorkerState state;
   attribute EventHandler onstatechange;
+
+  // FIXME(catalinb): Bug 1053483 - This should be inherited from MessageUtils
+  [Throws]
+  void postMessage(any message, optional sequence<Transferable> transferable);
 };
 
 ServiceWorker implements AbstractWorker;

dom/workers/ServiceWorker.cpp

@@ -11,6 +11,7 @@
 
 #include "mozilla/dom/Promise.h"
 
+using mozilla::ErrorResult;
 using namespace mozilla::dom;
 USING_WORKERS_NAMESPACE
 
@@ -46,6 +47,17 @@ ServiceWorker::WrapObject(JSContext* aCx)
   return ServiceWorkerBinding::Wrap(aCx, this);
 }
 
+void
+ServiceWorker::PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
+                           const Optional<Sequence<JS::Value>>& aTransferable,
+                           ErrorResult& aRv)
+{
+  WorkerPrivate* workerPrivate = GetWorkerPrivate();
+  MOZ_ASSERT(workerPrivate);
+
+  workerPrivate->PostMessage(aCx, aMessage, aTransferable, aRv);
+}
+
 WorkerPrivate*
 ServiceWorker::GetWorkerPrivate() const
 {

dom/workers/ServiceWorker.h

@@ -52,6 +52,11 @@ public:
     aURL = mURL;
   }
 
+  void
+  PostMessage(JSContext* aCx, JS::Handle<JS::Value> aMessage,
+              const Optional<Sequence<JS::Value>>& aTransferable,
+              ErrorResult& aRv);
+
   WorkerPrivate*
   GetWorkerPrivate() const;