Convert more "queue a task" to "queue an element task"

This accounts for <marquee> and one that was missed for <frame>.

Part of #4980.

Author: dtapuska

source

@@ -113957,9 +113957,6 @@ if (s = prompt('What is your name?')) {
   <p>The <code>marquee</code> element is a presentational element that animates content. CSS
   transitions and animations are a more appropriate mechanism. <ref spec=CSSANIMATIONS> <ref spec=CSSTRANSITIONS></p>
 
-  <p>The <span>task source</span> for tasks mentioned in this section is the <span>DOM manipulation
-  task source</span>.</p>
-
   <p>The <code>marquee</code> element must implement the <code>HTMLMarqueeElement</code>
   interface.</p>
 
@@ -113997,8 +113994,9 @@ interface <dfn>HTMLMarqueeElement</dfn> : <span>HTMLElement</span> {
   <p>When the <dfn><code data-x="dom-marquee-stop">stop()</code></dfn> method is called, the
   <code>marquee</code> element must be <span data-x="concept-marquee-off">turned off</span>.</p>
 
-  <p>When a <code>marquee</code> element is created, the user agent must <span>queue a task</span>
-  to <span data-x="concept-event-fire">fire an event</span> named <code undefined
+  <p>When a <code>marquee</code> element is created, the user agent must <span>queue an element
+  task</span> on the <span>DOM manipulation task source</span> given the <code>marquee</code>
+  element to <span data-x="concept-event-fire">fire an event</span> named <code undefined
   data-x="event-marquee-start">start</code> at the element.</p>
 
   <hr>
@@ -114118,17 +114116,20 @@ interface <dfn>HTMLMarqueeElement</dfn> : <span>HTMLElement</span> {
    <li>
     <p>If the <span>marquee current loop index</span> is now equal to or greater than the element's
     <span>marquee loop count</span>, <span data-x="concept-marquee-off">turn off</span> the
-    <code>marquee</code> element and <span>queue a task</span> to <span
+    <code>marquee</code> element and <span>queue an element task</span> on the <span>DOM
+    manipulation task source</span> given the <code>marquee</code> element to <span
     data-x="concept-event-fire">fire an event</span> named <code undefined
     data-x="event-marquee-finish">finish</code> at the <code>marquee</code> element.</p>
 
     <p>Otherwise, if the <code data-x="attr-marquee-behavior">behavior</code> attribute is in the
-    <span data-x="attr-marquee-behavior-alternate">alternate</span> state, then <span>queue a
-    task</span> to <span data-x="concept-event-fire">fire an event</span> named <code undefined
-    data-x="event-marquee-bounce">bounce</code> at the <code>marquee</code> element.</p>
-
-    <p>Otherwise, <span>queue a task</span> to <span data-x="concept-event-fire">fire an
-    event</span> named <code undefined data-x="event-marquee-start">start</code> at the
+    <span data-x="attr-marquee-behavior-alternate">alternate</span> state, then <span>queue an
+    element task</span> on the <span>DOM manipulation task source</span> given the
+    <code>marquee</code> element to <span data-x="concept-event-fire">fire an event</span> named
+    <code undefined data-x="event-marquee-bounce">bounce</code> at the <code>marquee</code> element.</p>
+
+    <p>Otherwise, <span>queue an element task</span> on the <span>DOM manipulation task
+    source</span> given the <code>marquee</code> element to <span data-x="concept-event-fire">fire
+    an event</span> named <code undefined data-x="event-marquee-start">start</code> at the
     <code>marquee</code> element.</p>
    </li>
   </ol>