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 2d80031015a011433cf1e4d1f45f47d0fadf0573..ba044b2813866d416664e4a1ec1d12c2f4b33709 100644
--- a/media/test/data/eme_player_js/globals.js
+++ b/media/test/data/eme_player_js/globals.js
@@ -53,6 +53,13 @@ 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"',