Add video.removeTextTrack() method

source

@@ -32028,6 +32028,7 @@ interface <dfn>HTMLMediaElement</dfn> : <span>HTMLElement</span> {
   [SameObject] readonly attribute <span>VideoTrackList</span> <span data-x="dom-media-videoTracks">videoTracks</span>;
   [SameObject] readonly attribute <span>TextTrackList</span> <span data-x="dom-media-textTracks">textTracks</span>;
   <span>TextTrack</span> <span data-x="dom-media-addTextTrack">addTextTrack</span>(<span>TextTrackKind</span> kind, optional DOMString label = "", optional DOMString language = "");
+  void <span data-x="dom-media-removeTextTrack">removeTextTrack</span>(<span>TextTrack</span> textTrack);
 };</pre>
 
   <p>The <dfn>media element attributes</dfn>, <code data-x="attr-media-src">src</code>, <code
@@ -36716,6 +36717,13 @@ interface <dfn>TextTrack</dfn> : <span>EventTarget</span> {
 
    </dd>
 
+   <dt><var>media</var> . <code subdfn data-x="dom-media-removeTextTrack">removeTextTrack</code>( <var>textTrack</var> )</dt>
+   <dd>
+
+    <p>Removes a TODO.</p>
+
+   </dd>
+
    <dt><var>textTrack</var> . <code subdfn data-x="dom-TextTrack-kind">kind</code></dt>
    <dd>
 
@@ -36864,6 +36872,41 @@ interface <dfn>TextTrack</dfn> : <span>EventTarget</span> {
 
   <hr>
 
+  <p>The <dfn><code
+  data-x="dom-media-removeTextTrack">removeTextTrack(<var>textTrack</var>)</code></dfn> method of
+  <span data-x="media element">media elements</span>, when invoked, must run the following
+  steps:</p>
+
+  <ol>
+   <li><p>If <var>textTrack</var> is not in the <span>media element</span>'s <span>list of text
+   tracks</span>, then throw a <span>"<code>NotFoundError</code>"</span> <code>DOMException</code>
+   and abort these steps.</p></li>
+
+   <li>
+    <p>If <var>textTrack</var> has a corresponding <code>track</code> element, then <span
+    data-x="concept-node-remove">remove</span> that <code>track</code> element and abort these
+    steps.</p>
+
+    <p class=note>This will cause <var>textTrack</var> to be removed from the <span>media
+    element</span>'s <span>list of text tracks</span> and a <code
+    data-x="event-media-removetrack">removetrack</code> event to be fired.</p>
+   </li>
+
+   <li><p>If <var>textTrack</var> is a <span>media-resource-specific text track</span>, then
+   TODO.</p></li>
+
+   <li><p>Remove <var>textTrack</var> from the <span>media element</span>'s <span>list of text
+   tracks</span>.</p></li>
+
+   <li><p><span>Queue a task</span> to <span data-x="concept-event-fire">fire an event</span> named
+   <code data-x="event-media-removetrack">removetrack</code> at the <span>media element</span>'s
+   <code data-x="dom-media-textTracks">textTracks</code> attribute's <code>TextTrackList</code>
+   object, using <code>TrackEvent</code>, with the <code data-x="dom-TrackEvent-track">track</code>
+   attribute initialized to <var>textTrack</var>.</p></li>
+  </ol>
+
+  <hr>
+
   <p>The <dfn><code data-x="dom-TextTrack-kind">kind</code></dfn> attribute must return the
   <span>text track kind</span> of the <span>text track</span> that the <code>TextTrack</code> object
   represents.</p>