[WIP] bindings: Introduce PropertyBag

Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h

Index: Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h
diff --git a/Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h b/Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h
index 59e62031bd97f4099cd9c10730326581e2f90634..9f03a8b34a25bd1ff1929a805c577ea3ae4c67af 100644
--- a/Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h
+++ b/Source/bindings/tests/results/V8TestInterfaceCustomConstructor.h
@@ -7,6 +7,7 @@
 #ifndef V8TestInterfaceCustomConstructor_h
 #define V8TestInterfaceCustomConstructor_h
 
+#include "bindings/core/v8/PropertyBagTraits.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
@@ -127,5 +128,10 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtr<Te
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestInterfaceCustomConstructor> {
+    typedef V8TestInterfaceCustomConstructor type;
+};
+
 } // namespace blink
 #endif // V8TestInterfaceCustomConstructor_h