Remove ToObject on elements from Array.prototype.toLocaleString()

src/array.js

 // Copyright 2012 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.
 
 (function(global, utils) {
 
 "use strict";
 
 %CheckIsBootstrapping();
 
@@ skipping 199 matching lines @@
   } else {
     return TO_STRING(x);
   }
 }
 
 
 function ConvertToLocaleString(e) {
   if (IS_NULL_OR_UNDEFINED(e)) {
     return '';
   } else {
-    // According to ES5, section 15.4.4.3, the toLocaleString conversion
-    // must throw a TypeError if ToObject(e).toLocaleString isn't
-    // callable.
-    var e_obj = TO_OBJECT(e);
-    return TO_STRING(e_obj.toLocaleString());
+    return TO_STRING(e.toLocaleString());
   }
 }
 
 
 // This function implements the optimized splice implementation that can use
 // special array operations to handle sparse arrays in a sensible fashion.
 function SparseSlice(array, start_i, del_count, len, deleted_elements) {
   // Move deleted elements to a new array (the return value from splice).
   var indices = %GetArrayKeys(array, start_i + del_count);
   if (IS_NUMBER(indices)) {
@@ skipping 1419 matching lines @@
 %InstallToContext([
   "array_pop", ArrayPop,
   "array_push", ArrayPush,
   "array_shift", ArrayShift,
   "array_splice", ArraySplice,
   "array_slice", ArraySlice,
   "array_unshift", ArrayUnshift,
 ]);
 
 });