1 files changed, 17 insertions, 2 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/runtime/DateInstance.h b/src/3rdparty/webkit/JavaScriptCore/runtime/DateInstance.h
index 38b321c699..77d46de5df 100644
--- a/src/3rdparty/webkit/JavaScriptCore/runtime/DateInstance.h
+++ b/src/3rdparty/webkit/JavaScriptCore/runtime/DateInstance.h
@@ -32,23 +32,38 @@ namespace JSC {
     class DateInstance : public JSWrapperObject {
     public:
         DateInstance(ExecState*, double);
+        DateInstance(ExecState*, NonNullPassRefPtr<Structure>, double);
         explicit DateInstance(ExecState*, NonNullPassRefPtr<Structure>);
 
         double internalNumber() const { return internalValue().uncheckedGetNumber(); }
 
         static JS_EXPORTDATA const ClassInfo info;
 
-        bool getGregorianDateTime(ExecState*, bool outputIsUTC, WTF::GregorianDateTime&) const;
+        const GregorianDateTime* gregorianDateTime(ExecState* exec) const
+        {
+            if (m_data && m_data->m_gregorianDateTimeCachedForMS == internalNumber())
+                return &m_data->m_cachedGregorianDateTime;
+            return calculateGregorianDateTime(exec);
+        }
+        
+        const GregorianDateTime* gregorianDateTimeUTC(ExecState* exec) const
+        {
+            if (m_data && m_data->m_gregorianDateTimeUTCCachedForMS == internalNumber())
+                return &m_data->m_cachedGregorianDateTimeUTC;
+            return calculateGregorianDateTimeUTC(exec);
+        }
 
         static PassRefPtr<Structure> createStructure(JSValue prototype)
         {
-            return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags));
+            return Structure::create(prototype, TypeInfo(ObjectType, StructureFlags), AnonymousSlotCount);
         }
 
     protected:
         static const unsigned StructureFlags = OverridesMarkChildren | JSWrapperObject::StructureFlags;
 
     private:
+        const GregorianDateTime* calculateGregorianDateTime(ExecState*) const;
+        const GregorianDateTime* calculateGregorianDateTimeUTC(ExecState*) const;
         virtual const ClassInfo* classInfo() const { return &info; }
 
         mutable RefPtr<DateInstanceData> m_data;