[WIP] bindings: Introduce PropertyBag

Source/bindings/tests/results/V8TestInterface.h

Index: Source/bindings/tests/results/V8TestInterface.h
diff --git a/Source/bindings/tests/results/V8TestInterface.h b/Source/bindings/tests/results/V8TestInterface.h
index 9abc3407cabb914eabe8659cc5619c87cad3791f..8454cd401b10c3633b41392e42242ad7348ce3fb 100644
--- a/Source/bindings/tests/results/V8TestInterface.h
+++ b/Source/bindings/tests/results/V8TestInterface.h
@@ -8,6 +8,7 @@
 #define V8TestInterface_h
 
 #if ENABLE(CONDITION)
+#include "bindings/core/v8/PropertyBagTraits.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
@@ -103,6 +104,11 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtr<Te
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestInterfaceImplementation> {
+    typedef V8TestInterface type;
+};
+
 } // namespace blink
 #endif // ENABLE(CONDITION)
 #endif // V8TestInterface_h