Revert "Make window.undefined, window.NaN, window.Infinitiy read-only (ES5 section 15.1.1)"

This reverts r8691.

Review URL: http://codereview.chromium.org/7457020

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8692 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/v8natives.js

@@ -162,14 +162,13 @@ function GlobalEval(x) {
 
 function SetupGlobal() {
   // ECMA 262 - 15.1.1.1.
-  %SetProperty(global, "NaN", $NaN, DONT_ENUM | DONT_DELETE | READ_ONLY);
+  %SetProperty(global, "NaN", $NaN, DONT_ENUM | DONT_DELETE);
 
   // ECMA-262 - 15.1.1.2.
-  %SetProperty(global, "Infinity", 1/0, DONT_ENUM | DONT_DELETE | READ_ONLY);
+  %SetProperty(global, "Infinity", 1/0, DONT_ENUM | DONT_DELETE);
 
   // ECMA-262 - 15.1.1.3.
-  %SetProperty(global, "undefined", void 0, 
-               DONT_ENUM | DONT_DELETE | READ_ONLY);
+  %SetProperty(global, "undefined", void 0, DONT_ENUM | DONT_DELETE);
 
   // Setup non-enumerable function on the global object.
   InstallFunctions(global, DONT_ENUM, $Array(

test/mjsunit/regress/regress-89490.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
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-// For reference: http://code.google.com/p/chromium/issues/detail?id=89490
-
-var inf_backup = Infinity;
-Infinity = 42;
-assertEquals(inf_backup, Infinity);
-
-var undef_backup = undefined;
-undefined = 42;
-assertEquals(undef_backup, undefined);
-
-var nan_backup = NaN;
-NaN = 42;
-assertEquals(nan_backup, NaN);
\ No newline at end of file