ServiceWorker: Add initial implementation of ExtendableMessageEvent behind a flag

third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index 53cfd751b51b895f13424a62c68711d1197b145f..789aa5448b5ca6337d47a0c7adcce3879144cb01 100644
--- a/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/third_party/WebKit/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -54,6 +54,7 @@
 #include "modules/push_messaging/PushEvent.h"
 #include "modules/push_messaging/PushMessageData.h"
 #include "modules/serviceworkers/ExtendableEvent.h"
+#include "modules/serviceworkers/ExtendableMessageEvent.h"
 #include "modules/serviceworkers/FetchEvent.h"
 #include "modules/serviceworkers/InstallEvent.h"
 #include "modules/serviceworkers/ServiceWorkerGlobalScope.h"
@@ -102,6 +103,17 @@ void ServiceWorkerGlobalScopeProxy::dispatchActivateEvent(int eventID)
     workerGlobalScope()->dispatchExtendableEvent(event.release(), observer);
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchExtendableMessageEvent(int eventID, const WebString& message, const WebMessagePortChannelArray& webChannels)
+{
+    ASSERT(RuntimeEnabledFeatures::serviceWorkerExtendableMessageEventEnabled());
+
+    ExtendableMessageEventInit initializer;
+    WaitUntilObserver* observer = WaitUntilObserver::create(workerGlobalScope(), WaitUntilObserver::ExtendableMessage, eventID);
+
+    RefPtrWillBeRawPtr<Event> event(ExtendableMessageEvent::create(EventTypeNames::extendablemessage, initializer, observer));
+    workerGlobalScope()->dispatchExtendableEvent(event.release(), observer);
+}
+
 void ServiceWorkerGlobalScopeProxy::dispatchFetchEvent(int eventID, const WebServiceWorkerRequest& webRequest)
 {
     RespondWithObserver* observer = RespondWithObserver::create(workerGlobalScope(), eventID, webRequest.url(), webRequest.mode(), webRequest.frameType(), webRequest.requestContext());