[WIP] bindings: Introduce PropertyBag

Source/bindings/tests/results/V8TestInterfaceEventTarget.h

Index: Source/bindings/tests/results/V8TestInterfaceEventTarget.h
diff --git a/Source/bindings/tests/results/V8TestInterfaceEventTarget.h b/Source/bindings/tests/results/V8TestInterfaceEventTarget.h
index e88b4fe21f442552faa1b23767bf7fbd7c93eabf..bc68f02b87f14d4ac778b2b9235d7b63979f0a2a 100644
--- a/Source/bindings/tests/results/V8TestInterfaceEventTarget.h
+++ b/Source/bindings/tests/results/V8TestInterfaceEventTarget.h
@@ -7,6 +7,7 @@
 #ifndef V8TestInterfaceEventTarget_h
 #define V8TestInterfaceEventTarget_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"
@@ -139,5 +140,10 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtrWil
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestInterfaceEventTarget> {
+    typedef V8TestInterfaceEventTarget type;
+};
+
 } // namespace blink
 #endif // V8TestInterfaceEventTarget_h