Implement IDBVersionChangeEvent ctor w/ IDBVersionChangeEventInit dict

Source/modules/indexeddb/IDBOpenDBRequest.cpp

Index: Source/modules/indexeddb/IDBOpenDBRequest.cpp
diff --git a/Source/modules/indexeddb/IDBOpenDBRequest.cpp b/Source/modules/indexeddb/IDBOpenDBRequest.cpp
index 9199f717a3d114ba0583a0c1f82f20c84defef3b..123a5ff30113a83b292e9172c2dcaec3cbe51861 100644
--- a/Source/modules/indexeddb/IDBOpenDBRequest.cpp
+++ b/Source/modules/indexeddb/IDBOpenDBRequest.cpp
@@ -26,6 +26,7 @@
 #include "config.h"
 #include "modules/indexeddb/IDBOpenDBRequest.h"
 
+#include "bindings/v8/Nullable.h"
 #include "core/dom/ExceptionCode.h"
 #include "core/dom/ExecutionContext.h"
 #include "modules/indexeddb/IDBDatabase.h"
@@ -69,8 +70,8 @@ void IDBOpenDBRequest::onBlocked(int64_t oldVersion)
     IDB_TRACE("IDBOpenDBRequest::onBlocked()");
     if (!shouldEnqueueEvent())
         return;
-    RefPtr<IDBAny> newVersionAny = (m_version == IDBDatabaseMetadata::DefaultIntVersion) ? IDBAny::createNull() : IDBAny::create(m_version);
-    enqueueEvent(IDBVersionChangeEvent::create(IDBAny::create(oldVersion), newVersionAny.release(), EventTypeNames::blocked));
+    Nullable<unsigned long long> newVersionNullable = (m_version == IDBDatabaseMetadata::DefaultIntVersion) ? Nullable<unsigned long long>() : Nullable<unsigned long long>(m_version);
+    enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::blocked, oldVersion, newVersionNullable));
 }
 
 void IDBOpenDBRequest::onUpgradeNeeded(int64_t oldVersion, PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata, blink::WebIDBDataLoss dataLoss, String dataLossMessage)
@@ -102,7 +103,7 @@ void IDBOpenDBRequest::onUpgradeNeeded(int64_t oldVersion, PassOwnPtr<WebIDBData
 
     if (m_version == IDBDatabaseMetadata::NoIntVersion)
         m_version = 1;
-    enqueueEvent(IDBVersionChangeEvent::create(IDBAny::create(oldVersion), IDBAny::create(m_version), EventTypeNames::upgradeneeded, dataLoss, dataLossMessage));
+    enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::upgradeneeded, oldVersion, m_version, dataLoss, dataLossMessage));
 }
 
 void IDBOpenDBRequest::onSuccess(PassOwnPtr<WebIDBDatabase> backend, const IDBDatabaseMetadata& metadata)