IDL: Add PropertyBag class

Source/bindings/tests/results/V8TestObject.h

Index: Source/bindings/tests/results/V8TestObject.h
diff --git a/Source/bindings/tests/results/V8TestObject.h b/Source/bindings/tests/results/V8TestObject.h
index fea4c85dd8a0466fcd44332aca8e5ec6ba30727a..0d202b29a7eaf55053966a651bfd9bf1af88c23d 100644
--- a/Source/bindings/tests/results/V8TestObject.h
+++ b/Source/bindings/tests/results/V8TestObject.h
@@ -7,6 +7,7 @@
 #ifndef V8TestObject_h
 #define V8TestObject_h
 
+#include "bindings/core/v8/PropertyBag.h"
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "bindings/core/v8/V8Binding.h"
 #include "bindings/core/v8/V8DOMWrapper.h"
@@ -162,5 +163,10 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtr<Te
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestObject> {
+    typedef V8TestObject type;
+};
+
 } // namespace blink
 #endif // V8TestObject_h