Addressing reviewer's comments.

Updated Change Log.

BLD-488

CHANGELOG.rst

@@ -5,6 +5,8 @@ These are notable changes in edx-platform.  This is a rolling list of changes,
 in roughly chronological order, most recent first.  Add your entries at or near
 the top.  Include a label indicating the component affected.
 
+Blades: a11y - Videos will alert screenreaders when the video is over.
+
 LMS: Trap focus on the loading element when a user loads more threads
 in the forum sidebar to improve accessibility.
 

common/lib/xmodule/xmodule/js/spec/video/video_player_spec.js

@@ -4,28 +4,23 @@
             videoProgressSlider, videoSpeedControl, videoVolumeControl,
             oldOTBD;
 
-        function initialize(config) {
-            if (config) {
-                if (config.fixture) {
-                    loadFixtures(config.fixture);
-                } else {
-                    loadFixtures('video_all.html');
+        function initialize(fixture, params) {
+            if (_.isString(fixture)) {
+                loadFixtures(fixture);
+            } else {
+                if (_.isObject(fixture)) {
+                    params = fixture;
                 }
 
-                if (config.startTime) {
-                    $('#example')
-                        .find('#video_id')
-                        .data('start', config.startTime);
-                }
-                if (config.endTime) {
-                    $('#example')
-                        .find('#video_id')
-                        .data('end', config.endTime);
-                }
-            } else {
                 loadFixtures('video_all.html');
             }
 
+            if (_.isObject(params)) {
+                $('#example')
+                    .find('#video_id')
+                    .data(params);
+            }
+
             state = new Video('#example');
 
             state.videoEl = $('video, iframe');
@@ -56,7 +51,7 @@
         }
 
         function initializeYouTube() {
-            initialize({fixture: 'video.html'});
+            initialize('video.html');
         }
 
         beforeEach(function () {
@@ -548,10 +543,10 @@
         });
 
         describe('update with start & end time', function () {
-            var START_TIME = 2, END_TIME = 4;
+            var START_TIME = 1, END_TIME = 2;
 
             beforeEach(function () {
-                initialize({startTime: START_TIME, endTime: END_TIME});
+                initialize({start: START_TIME, end: END_TIME});
 
                 spyOn(videoPlayer, 'update').andCallThrough();
                 spyOn(videoPlayer, 'pause').andCallThrough();
@@ -673,9 +668,12 @@
             });
         });
 
-        describe('updatePlayTime with start & end times', function () {
+        describe('updatePlayTime when start & end times are defined', function () {
+            var START_TIME = 1,
+                END_TIME = 2;
+
             beforeEach(function () {
-                initialize({startTime: 2, endTime: 4});
+                initialize({start: START_TIME, end: END_TIME});
 
                 spyOn(videoPlayer, 'updatePlayTime').andCallThrough();
                 spyOn(videoPlayer.player, 'seekTo').andCallThrough();
@@ -699,16 +697,14 @@
                 }, 'duration becomes available', 1000);
 
                 runs(function () {
-                    expect(videoPlayer.startTime).toBe(2);
-                    expect(videoPlayer.endTime).toBe(4);
+                    expect(videoPlayer.startTime).toBe(START_TIME);
+                    expect(videoPlayer.endTime).toBe(END_TIME);
 
-                    expect(videoPlayer.player.seekTo).toHaveBeenCalledWith(2);
+                    expect(videoPlayer.player.seekTo).toHaveBeenCalledWith(START_TIME);
 
                     expect(videoProgressSlider.updateStartEndTimeRegion)
                         .toHaveBeenCalledWith({duration: duration});
 
-                    // videoProgressSlider.updateStartEndTimeRegion
-
                     expect(videoPlayer.seekToStartTimeOldSpeed).toBe(state.speed);
                 });
             });
@@ -716,7 +712,7 @@
 
         describe('updatePlayTime with invalid endTime', function () {
             beforeEach(function () {
-                initialize({endTime: 100000});
+                initialize({end: 100000});
 
                 spyOn(videoPlayer, 'updatePlayTime').andCallThrough();
             });

common/lib/xmodule/xmodule/js/src/video/06_video_progress_slider.js

@@ -228,8 +228,9 @@ function () {
     // onPlay(), and update() (update method handles endTime).
     function notifyThroughHandleEnd(params) {
         if (params.end) {
-            this.videoProgressSlider.handle.attr('title', 'video ended');
-            this.videoProgressSlider.handle.focus();
+            this.videoProgressSlider.handle
+                .attr('title', 'video ended')
+                .focus();
         } else {
             this.videoProgressSlider.handle.attr('title', 'video position');
         }