Fix arguments object materialization during deopt.

test/mjsunit/compiler/inline-arguments.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 140 matching lines @@
   %OptimizeFunctionOnNextCall(toarr);
   assertArrayEquals([3, 2, 1], toarr(marker, 2, 4, 6));
   delete marker.x;
   assertArrayEquals([3, 2, 1], toarr(marker, 2, 4, 6));
 }
 
 test_toarr(toarr1);
 test_toarr(toarr2);
 
 // Test that arguments access from inlined function uses correct values.
-// TODO(mstarzinger): Tests disabled, see bug 2261
-/*
 (function () {
   function inner(x, y) {
     "use strict";
     x = 10;
     y = 20;
     for (var i = 0; i < 1; i++) {
       for (var j = 1; j <= arguments.length; j++) {
         return arguments[arguments.length - j];
       }
     }
@@ skipping 24 matching lines @@
   function outer(x, y) {
     return inner(x, y);
   }
 
   assertEquals(2, outer(1, 2));
   assertEquals(2, outer(1, 2));
   assertEquals(2, outer(1, 2));
   %OptimizeFunctionOnNextCall(outer);
   assertEquals(2, outer(1, 2));
 })();
-*/