Start to implement FetchEvent for ServiceWorker

Source/web/ServiceWorkerGlobalScopeClientImpl.cpp

Index: Source/web/ServiceWorkerGlobalScopeClientImpl.cpp
diff --git a/Source/web/ServiceWorkerGlobalScopeClientImpl.cpp b/Source/web/ServiceWorkerGlobalScopeClientImpl.cpp
index 475fa60c2537d5a7d4f57bbd9ee377aa85404e3b..1badca590bada6e1020e39cc013914fea78127dc 100644
--- a/Source/web/ServiceWorkerGlobalScopeClientImpl.cpp
+++ b/Source/web/ServiceWorkerGlobalScopeClientImpl.cpp
@@ -32,6 +32,8 @@
 #include "ServiceWorkerGlobalScopeClientImpl.h"
 
 #include "WebServiceWorkerContextClient.h"
+#include "WebServiceWorkerFetchResponse.h"
+#include "modules/serviceworkers/Response.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace blink {
@@ -51,6 +53,16 @@ void ServiceWorkerGlobalScopeClientImpl::didHandleInstallEvent(int installEventI
         m_client->didHandleInstallEvent(installEventID);
 }
 
+void ServiceWorkerGlobalScopeClientImpl::didHandleFetchEvent(int fetchEventID, PassRefPtr<WebCore::Response> response)
+{
+    if (!m_client)
+        return;
+    if (response)
+        m_client->didHandleFetchEvent(fetchEventID, WebServiceWorkerFetchResponse(response));
+    else
+        m_client->didHandleFetchEvent(fetchEventID, WebServiceWorkerFetchResponse(WebServiceWorkerFetchResponse::FallbackToNative));
+}
+
 ServiceWorkerGlobalScopeClientImpl::ServiceWorkerGlobalScopeClientImpl(PassOwnPtr<WebServiceWorkerContextClient> client)
     : m_client(client)
 {