ServiceWorker: Introduce ServiceWorkerMessageEvent to replace MessageEvent (3/3).

Source/modules/serviceworkers/ServiceWorkerContainer.cpp

Index: Source/modules/serviceworkers/ServiceWorkerContainer.cpp
diff --git a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
index 7218343c7d6762070601ac46fb0ede71750f2fc7..ba7e343f99203cbc8b40581266e91c9e7209f2b7 100644
--- a/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
+++ b/Source/modules/serviceworkers/ServiceWorkerContainer.cpp
@@ -40,12 +40,12 @@
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/dom/MessagePort.h"
-#include "core/events/MessageEvent.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "modules/EventTargetModules.h"
 #include "modules/serviceworkers/ServiceWorker.h"
 #include "modules/serviceworkers/ServiceWorkerContainerClient.h"
 #include "modules/serviceworkers/ServiceWorkerError.h"
+#include "modules/serviceworkers/ServiceWorkerMessageEvent.h"
 #include "modules/serviceworkers/ServiceWorkerRegistration.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "public/platform/WebServiceWorker.h"
@@ -372,14 +372,15 @@ void ServiceWorkerContainer::setController(WebServiceWorker* serviceWorker, bool
         dispatchEvent(Event::create(EventTypeNames::controllerchange));
 }
 
-void ServiceWorkerContainer::dispatchMessageEvent(const WebString& message, const WebMessagePortChannelArray& webChannels)
+void ServiceWorkerContainer::dispatchMessageEvent(WebServiceWorker* serviceWorker, const WebString& message, const WebMessagePortChannelArray& webChannels)
 {
     if (!executionContext() || !executionContext()->executingWindow())
         return;
 
     OwnPtrWillBeRawPtr<MessagePortArray> ports = MessagePort::toMessagePortArray(executionContext(), webChannels);
     RefPtr<SerializedScriptValue> value = SerializedScriptValueFactory::instance().createFromWire(message);
-    executionContext()->executingWindow()->dispatchEvent(MessageEvent::create(ports.release(), value));
+    RefPtrWillBeRawPtr<ServiceWorker> source = ServiceWorker::from(executionContext(), serviceWorker);
+    dispatchEvent(ServiceWorkerMessageEvent::create(ports.release(), value, source));
 }
 
 const AtomicString& ServiceWorkerContainer::interfaceName() const