Implement IDBVersionChangeEvent ctor w/ IDBVersionChangeEventInit dict

Source/modules/indexeddb/IDBDatabase.cpp

Index: Source/modules/indexeddb/IDBDatabase.cpp
diff --git a/Source/modules/indexeddb/IDBDatabase.cpp b/Source/modules/indexeddb/IDBDatabase.cpp
index d7a9084632969c4735a2f00f877de65d41d87eb4..7fad2c8a740dd4699a7a5272b1a0e7fd85882f9c 100644
--- a/Source/modules/indexeddb/IDBDatabase.cpp
+++ b/Source/modules/indexeddb/IDBDatabase.cpp
@@ -29,6 +29,8 @@
 #include "bindings/v8/ExceptionState.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "bindings/v8/IDBBindingUtilities.h"
+#include "bindings/v8/Nullable.h"
+#include "bindings/v8/SerializedScriptValue.h"
 #include "core/dom/ExecutionContext.h"
 #include "core/events/EventQueue.h"
 #include "core/inspector/ScriptCallStack.h"
@@ -360,8 +362,8 @@ void IDBDatabase::onVersionChange(int64_t oldVersion, int64_t newVersion)
     if (m_closePending)
         return;
 
-    RefPtr<IDBAny> newVersionAny = newVersion == IDBDatabaseMetadata::NoIntVersion ? IDBAny::createNull() : IDBAny::create(newVersion);
-    enqueueEvent(IDBVersionChangeEvent::create(IDBAny::create(oldVersion), newVersionAny.release(), EventTypeNames::versionchange));
+    Nullable<unsigned long long> newVersionNullable = (newVersion == IDBDatabaseMetadata::NoIntVersion) ? Nullable<unsigned long long>() : Nullable<unsigned long long>(newVersion);
+    enqueueEvent(IDBVersionChangeEvent::create(EventTypeNames::versionchange, oldVersion, newVersionNullable));
 }
 
 void IDBDatabase::enqueueEvent(PassRefPtr<Event> event)