Partial rollback of Promise error checking

test/mjsunit/regress/regress-crbug-575314.js

Index: test/mjsunit/regress/regress-crbug-575314.js
diff --git a/test/mjsunit/regress/regress-crbug-575314.js b/test/mjsunit/regress/regress-crbug-575314.js
new file mode 100644
index 0000000000000000000000000000000000000000..7a5bd4eb707c48d4abf0897a6acbef600e77a970
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-575314.js
@@ -0,0 +1,15 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax
+
+// https://code.google.com/p/chromium/issues/detail?id=575314
+
+// Overwriting the constructor of a Promise with something that doesn't have
+// @@species shouldn't result in a rejection, even if that constructor
+// is somewhat bogus.
+
+var test = new Promise(function(){});
+test.constructor = function(){};
+Promise.resolve(test).catch(e => %AbortJS(e + " FAILED!"));