MDL-16668 import htmlpurifier 3.1.1 to HEAD

lib/htmlpurifier/HTMLPurifier/AttrTransform/SafeEmbed.php

@@ -0,0 +1,13 @@
+<?php
+
+class HTMLPurifier_AttrTransform_SafeEmbed extends HTMLPurifier_AttrTransform 
+{
+    public $name = "SafeEmbed";
+
+    public function transform($attr, $config, $context) {
+        $attr['allowscriptaccess'] = 'never';
+        $attr['allownetworking'] = 'internal';
+        $attr['type'] = 'application/x-shockwave-flash';
+        return $attr;
+    }
+}