[WIP] bindings: Introduce PropertyBag

Source/bindings/tests/results/V8TestTypedefs.h

Index: Source/bindings/tests/results/V8TestTypedefs.h
diff --git a/Source/bindings/tests/results/V8TestTypedefs.h b/Source/bindings/tests/results/V8TestTypedefs.h
index 0880e41cda9875d0d7e2b875f443ca9308fdcee7..c6301f700fa1ab83ed44f8a296b6ae4021bb03bb 100644
--- a/Source/bindings/tests/results/V8TestTypedefs.h
+++ b/Source/bindings/tests/results/V8TestTypedefs.h
@@ -7,6 +7,7 @@
 #ifndef V8TestTypedefs_h
 #define V8TestTypedefs_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"
@@ -126,5 +127,10 @@ inline void v8SetReturnValueFast(const CallbackInfo& callbackInfo, PassRefPtr<Te
     v8SetReturnValueFast(callbackInfo, impl.get(), wrappable);
 }
 
+template <>
+struct PropertyBagTraits<TestTypedefs> {
+    typedef V8TestTypedefs type;
+};
+
 } // namespace blink
 #endif // V8TestTypedefs_h