Backed out changeset 04b5629f3008 (bug 1276130)

testing/web-platform/tests/webvtt/webvtt-file-format-parsing/webvtt-file-parsing/001.html

@@ -17,7 +17,7 @@ var cueDefaults = {
 "line":-1,
 "position":50,
 "size":100,
-"align":"center"
+"align":"middle"
 }
 var cueCounts;
 (function(){

testing/web-platform/tests/webvtt/webvtt-file-format-parsing/webvtt-file-parsing/support/settings-multiple.vtt

@@ -8,8 +8,8 @@ WEBVTT
 "size":50,
 "position":25}
 
-00:00:00.000 --> 00:00:01.000 align:center line:1 vertical:rl size:0% position:100%
-{"align":"center",
+00:00:00.000 --> 00:00:01.000 align:middle line:1 vertical:rl size:0% position:100%
+{"align":"middle",
 "line":1,
 "vertical":"rl",
 "size":0,