[Background Sync] Add sync registration details to onsync event

Source/web/ServiceWorkerGlobalScopeProxy.cpp

Index: Source/web/ServiceWorkerGlobalScopeProxy.cpp
diff --git a/Source/web/ServiceWorkerGlobalScopeProxy.cpp b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
index 95001ffd7e9203328c1e4b23fdf12637458e40a8..3d0a55410be7a00e2c8ef9842758a1dc75683b9d 100644
--- a/Source/web/ServiceWorkerGlobalScopeProxy.cpp
+++ b/Source/web/ServiceWorkerGlobalScopeProxy.cpp
@@ -40,6 +40,7 @@
 #include "core/inspector/ConsoleMessage.h"
 #include "core/workers/WorkerGlobalScope.h"
 #include "modules/background_sync/SyncEvent.h"
+#include "modules/background_sync/SyncRegistration.h"
 #include "modules/fetch/Headers.h"
 #include "modules/geofencing/CircularGeofencingRegion.h"
 #include "modules/geofencing/GeofencingEvent.h"
@@ -160,6 +161,8 @@ void ServiceWorkerGlobalScopeProxy::dispatchServicePortConnectEvent(WebServicePo
     collection->dispatchConnectEvent(callbacks.release(), targetURL, origin, portID);
 }
 
+// TODO(iclelland): Remove this method in favor of the two-parameter version
+// below, once all call sites have been updated.
 void ServiceWorkerGlobalScopeProxy::dispatchSyncEvent(int eventID)
 {
     ASSERT(m_workerGlobalScope);
@@ -173,6 +176,18 @@ void ServiceWorkerGlobalScopeProxy::dispatchSyncEvent(int eventID)
     m_workerGlobalScope->dispatchExtendableEvent(event.release(), observer);
 }
 
+void ServiceWorkerGlobalScopeProxy::dispatchSyncEvent(int eventID, const WebSyncRegistration& registration)
+{
+    ASSERT(m_workerGlobalScope);
+    if (!RuntimeEnabledFeatures::backgroundSyncEnabled()) {
+        ServiceWorkerGlobalScopeClient::from(m_workerGlobalScope)->didHandleSyncEvent(eventID, WebServiceWorkerEventResultCompleted);
+        return;
+    }
+    WaitUntilObserver* observer = WaitUntilObserver::create(m_workerGlobalScope, WaitUntilObserver::Sync, eventID);
+    RefPtrWillBeRawPtr<Event> event(SyncEvent::create(EventTypeNames::sync, SyncRegistration::create(registration, m_workerGlobalScope->registration()), observer));
+    m_workerGlobalScope->dispatchExtendableEvent(event.release(), observer);
+}
+
 void ServiceWorkerGlobalScopeProxy::dispatchCrossOriginConnectEvent(int eventID, const WebCrossOriginServiceWorkerClient& webClient)
 {
     ASSERT(m_workerGlobalScope);