Fix name shown by devtools for subclasses.

test/mjsunit/regress/regress-crbug-523308.js

Index: test/mjsunit/regress/regress-crbug-523308.js
diff --git a/test/mjsunit/regress/regress-crbug-523308.js b/test/mjsunit/regress/regress-crbug-523308.js
index 5715762ed6b57e98c45e551fa6483bd8e5501a34..534fb280b17a1f29e48bcc48e57fe070f64c21d7 100644
--- a/test/mjsunit/regress/regress-crbug-523308.js
+++ b/test/mjsunit/regress/regress-crbug-523308.js
@@ -6,5 +6,5 @@ var error;
 try { reference_error(); } catch (e) { error = e; }
 toString = error.toString;
 error.__proto__ = [];
-assertEquals("ReferenceError: reference_error is not defined",
+assertEquals("Array: reference_error is not defined",
              toString.call(error));