Bug 978173 - Part 4: Add test for VTTCue::Region. r=rillian

Updated test_texttrackregion.html to reflect the changes as well.

See spec bug: https://www.w3.org/Bugs/Public/show_bug.cgi?id=24380

content/media/test/basic.vtt

@@ -1,15 +1,17 @@
 WEBVTT
+Region: id=testOne lines=2 width=30%
+Region: id=testTwo lines=4 width=20%
 
 1
-00:00.500 --> 00:00.700
+00:00.500 --> 00:00.700 region:testOne
 This
 
 2
-00:01.200 --> 00:02.400
+00:01.200 --> 00:02.400 region:testTwo
 Is
 
 2.5
-00:02.000 --> 00:03.500
+00:02.000 --> 00:03.500 region:testOne
 (Over here?!)
 
 3

content/media/test/test_texttrackcue.html

@@ -182,6 +182,21 @@ SpecialPowers.pushPrefEnv({"set": [["media.webvtt.enabled", true]]},
       trackElement.track.mode = "showing";
       video.currentTime = 0;
 
+      var regionInfo = [
+        { lines: 2, width: 30 },
+        { lines: 4, width: 20 },
+        { lines: 2, width: 30 }
+      ];
+
+      for (var i = 0; i < regionInfo.length; i++) {
+        var cue = cueList[i];
+        isnot(cue.region, null, "Cue at " + i + " should have a region.");
+        for (var key in regionInfo[i]) {
+          is(cue.region[key], regionInfo[i][key], "Region should have a " + key +
+                                                  " property with a value of " + regionInfo[i][key])
+        }
+      }
+
       // Test TextTrack::ActiveCues.
       var cueInfo = [
         { startTime: 0.51, endTime: 0.71, ids: ["Cue 01"] },

content/media/test/test_texttrackregion.html

@@ -36,17 +36,11 @@ SpecialPowers.pushPrefEnv({"set": [["media.webvtt.enabled", true]]},
       }
       is(trackElement.readyState, 2, "Track::ReadyState should be set to LOADED.");
 
-      var cues = trackElement.track.cues,
-          regions = trackElement.track.regions;
-
-      is(regions.length, 1, "Region list length should be 1.");
+      var cues = trackElement.track.cues;
       is(cues.length, 1, "Cue list length should be 1.");
 
-      is(cues[0].regionId, "fred", "Cue regionId should be 'fred'.");
-
-      var region = regions[0];
-
-      is(region.id, "fred", "Region ID should be 'fred'.");
+      var region = cues[0].region;
+      isnot(region, null, "Region should not be null.");
       is(region.width, 62, "Region width should be 50.");
       is(region.lines, 5, "Region lines should be 5.");
       is(region.regionAnchorX, 4, "Region regionAnchorX should be 4.");
@@ -54,7 +48,6 @@ SpecialPowers.pushPrefEnv({"set": [["media.webvtt.enabled", true]]},
       is(region.viewportAnchorX, 10, "Region viewportAnchorX should be 10.");
       is(region.viewportAnchorY, 90, "Region viewportAnchorY should be 90.");
       is(region.scroll, "up", "Region scroll should be 'up'");
-      is(region.track, trackElement.track, "Tracks should be equal.");
 
       SimpleTest.finish();
     });