[WIP] bindings: Introduce PropertyBag

Source/bindings/tests/results/V8TestInterfaceDocument.h

Index: Source/bindings/tests/results/V8TestInterfaceDocument.h
diff --git a/Source/bindings/tests/results/V8TestInterfaceDocument.h b/Source/bindings/tests/results/V8TestInterfaceDocument.h
index f35ec19781799318f2ca63429c93ada28feed35b..4486dea46cc46732daf462fd3c70a1a0d4b380ba 100644
--- a/Source/bindings/tests/results/V8TestInterfaceDocument.h
+++ b/Source/bindings/tests/results/V8TestInterfaceDocument.h
@@ -7,6 +7,7 @@
 #ifndef V8TestInterfaceDocument_h
 #define V8TestInterfaceDocument_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"
@@ -132,5 +133,10 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtrWil
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestInterfaceDocument> {
+    typedef V8TestInterfaceDocument type;
+};
+
 } // namespace blink
 #endif // V8TestInterfaceDocument_h