More details printed for Map, DescriptorArray and TransitionArray.

src/property-details.h

Index: src/property-details.h
diff --git a/src/property-details.h b/src/property-details.h
index f75bcff049e29038dcab9f449cb7024bf909ee21..61fecedd1bf265115cd36d9f8132e76425f979a3 100644
--- a/src/property-details.h
+++ b/src/property-details.h
@@ -295,6 +295,10 @@ class PropertyDetails BASE_EMBEDDED {
   uint32_t value_;
 };
 
+
+std::ostream& operator<<(std::ostream& os,
+                         const PropertyAttributes& attributes);
+std::ostream& operator<<(std::ostream& os, const PropertyDetails& details);
 } }  // namespace v8::internal
 
 #endif  // V8_PROPERTY_DETAILS_H_