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

test/mjsunit/regress/regress-1207.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 15 matching lines @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Test throwing an exception from instanceof.
 try {
 var object = { };
 function fib(n) {
   var f0 = (object instanceof encodeURI)('#2: var x = 1; x <= 1 === true'), f1 = 1;
 }
 fib(75);
 } catch (o) { }