[Isolates] Merge 6700:7030 from bleeding_edge to isolates.

test/mjsunit/regress/regress-1151.js

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 29 matching lines @@
 function f() { return 42; }
 f.prototype = 43;
 __defineGetter__.__proto__ = f;
 
 // Regression test for not returning undefined.
 assertEquals(__defineGetter__.prototype, 43);
 
 // Regression test for not crashing.
 __defineGetter__.prototype = "foo";
 assertEquals(__defineGetter__.prototype, "foo");