[Debug] deprecate ExceptionHandler::utf8Htmlize

src/Symfony/Component/Debug/ExceptionHandler.php

@@ -412,19 +412,12 @@ private function formatArgs(array $args)
 
     /**
      * Returns an UTF-8 and HTML encoded string
+     *
+     * @deprecated since version 2.7, to be removed in 3.0.
      */
     protected static function utf8Htmlize($str)
     {
-        if (!preg_match('//u', $str) && function_exists('iconv')) {
-            set_error_handler('var_dump', 0);
-            $charset = ini_get('default_charset');
-            if ('UTF-8' === $charset || $str !== @iconv($charset, $charset, $str)) {
-                $charset = 'CP1252';
-            }
-            restore_error_handler();
-
-            $str = iconv($charset, 'UTF-8', $str);
-        }
+        trigger_error('The '.__METHOD__.' method is deprecated since version 2.7 and will be removed in 3.0.', E_USER_DEPRECATED);
 
         return htmlspecialchars($str, ENT_QUOTES | (PHP_VERSION_ID >= 50400 ? ENT_SUBSTITUTE : 0), 'UTF-8');
     }