Add more plumbing for FetchEvent including WebServiceWorkerResponse

Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index 90713a5e983b3e46c34ce56be22c1ed730e92fcd..80307f05cd84d2b0a73d0826f7182c8fe0e5f898 100644
--- a/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -37,6 +37,7 @@
 #include "core/dom/ExecutionContext.h"
 #include "core/events/ThreadLocalEventNames.h"
 #include "core/workers/WorkerGlobalScope.h"
+#include "modules/serviceworkers/FetchEvent.h"
 #include "modules/serviceworkers/InstallEvent.h"
 #include "modules/serviceworkers/WaitUntilObserver.h"
 #include "platform/NotImplemented.h"
@@ -65,6 +66,14 @@ void ServiceWorkerGlobalScopeProxy::dispatchInstallEvent(int eventID)
     observer->didDispatchEvent();
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchFetchEvent(int eventID)
+{
+    ASSERT(m_workerGlobalScope);
+    RefPtr<RespondWithObserver> observer = RespondWithObserver::create(m_workerGlobalScope, eventID);
+    m_workerGlobalScope->dispatchEvent(FetchEvent::create(observer));
+    observer->didDispatchEvent();
+}
+
 void ServiceWorkerGlobalScopeProxy::reportException(const String& errorMessage, int lineNumber, int columnNumber, const String& sourceURL)
 {
     m_client.reportException(errorMessage, lineNumber, columnNumber, sourceURL);