Submit Object.getOwnPropertyNames patch by Pavel Feldman. See http://codereview.chromium.org/549050.

src/messages.js

Index: src/messages.js
diff --git a/src/messages.js b/src/messages.js
index d3c8fcca4345ae64356f7f944ebe513c96f8856f..df008c91b431161249c108caa368eeb84348ad6e 100644
--- a/src/messages.js
+++ b/src/messages.js
@@ -178,8 +178,7 @@ function FormatMessage(message) {
       result_not_primitive:         "Result of %0 must be a primitive, was %1",
       invalid_json:                 "String '%0' is not valid JSON",
       circular_structure:           "Converting circular structure to JSON",
-      object_keys_non_object:       "Object.keys called on non-object",
-      object_get_prototype_non_object: "Object.getPrototypeOf called on non-object",
+      obj_ctor_property_non_object: "Object.%0 called on non-object",
       array_indexof_not_defined:    "Array.getIndexOf: Argument undefined"
     };
   }