Reject pending play promises when playback ends (fixes #1646). (#1647)

source

@@ -33096,12 +33096,26 @@ interface <dfn>HTMLMediaElement</dfn> : <span>HTMLElement</span> {
    <li><p><span>Queue a task</span> to <span>fire a simple event</span> named <code
    data-x="event-media-timeupdate">timeupdate</code> at the <span>media element</span>.</p></li>
 
-   <li><p><span>Queue a task</span> that, if the <span>media element</span> has still <span>ended
-   playback</span>, and the <span>direction of playback</span> is still forwards, and <span
-   data-x="dom-media-paused">paused</span> is false, changes <span
-   data-x="dom-media-paused">paused</span> to true and <span data-x="fire a simple event">fires a
-   simple event</span> named <code data-x="event-media-pause">pause</code> at the <span>media
-   element</span>.</p></li>
+   <li>
+
+    <p><span>Queue a task</span> that, if the <span>media element</span> has still <span>ended
+    playback</span>, and the <span>direction of playback</span> is still forwards, and <span
+    data-x="dom-media-paused">paused</span> is false, runs the following substeps:</p>
+
+    <ol>
+
+     <li><p>Set the <code data-x="dom-media-paused">paused</code> attribute to true.</p></li>
+
+     <li><p><span data-x="fire a simple event">Fire a simple event</span> named <code
+     data-x="event-media-pause">pause</code> at the <span>media element</span>.</p></li>
+
+     <li><p><span>Take pending play promises</span> and <span>reject pending play promises</span>
+     with the result and an <span>"<code>AbortError</code>"</span>
+     <code>DOMException</code>.</p></li>
+
+    </ol>
+
+   </li>
 
    <li><p><span>Queue a task</span> to <span>fire a simple event</span> named <code
    data-x="event-media-ended">ended</code> at the <span>media element</span>.</p></li>