media: Allow config change between clear and encrypted streams

media/test/data/eme_player_js/globals.js

Index: media/test/data/eme_player_js/globals.js
diff --git a/media/test/data/eme_player_js/globals.js b/media/test/data/eme_player_js/globals.js
index 81e344e1daf212492e511ec6c300ab40c6eeca0c..bdc7d25cebf7cf6c5d8877eba924e8adf976e310 100644
--- a/media/test/data/eme_player_js/globals.js
+++ b/media/test/data/eme_player_js/globals.js
@@ -55,6 +55,13 @@ var KEY_SYSTEMS = {
   'External Clearkey': EXTERNAL_CLEARKEY
 };
 
+var CONFIG_CHANGE_TYPE = {
+  CLEAR_TO_CLEAR : '0',
+  CLEAR_TO_ENCRYPTED : '1',
+  ENCRYPTED_TO_CLEAR : '2',
+  ENCRYPTED_TO_ENCRYPTED : '3'
+};
+
 // General WebM and MP4 name:content_type map to show on the document page.
 var MEDIA_TYPES = {
   'WebM - Audio Video': 'video/webm; codecs="vorbis, vp8"',