Import intl test suite from v8-i18n project

test/intl/utils.js

Index: test/intl/utils.js
diff --git a/src/extensions/i18n/header.js b/test/intl/utils.js
similarity index 80%
copy from src/extensions/i18n/header.js
copy to test/intl/utils.js
index 1c0a2d8874b5aa982ca2be2fb39f2ead1c4a9622..431f2ea184d2a5aa2212dd313636376c77eff05b 100644
--- a/src/extensions/i18n/header.js
+++ b/test/intl/utils.js
@@ -26,16 +26,16 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // limitations under the License.
 
-// ECMAScript 402 API implementation is broken into separate files for
-// each service. The build system combines them together into one
-// Intl namespace.
-
 /**
- * Intl object is a single object that has some named properties,
- * all of which are constructors.
+ * Taints properties on Object.prototype so we can find security issues.
  */
-var Intl = (function() {
-
-'use strict';
-
-var Intl = {};
+function taintProperties(properties) {
+  properties.forEach(function(property) {
+    Object.defineProperty(Object.prototype, property, {
+      set: function(value) {
+        throw new Error('Property ' + property + ' is compromised. ' +
+                        'Setting value: ' + value);
+      }
+    });
+  });
+}