Remove "in agent" and fix one missed section

source

@@ -78062,7 +78062,7 @@ dictionary <dfn>DragEventInit</dfn> : <span>MouseEventInit</span> {
 
    <li>
     <p>Let <var>realm execution context</var> be the result of <span>creating a new JavaScript
-    realm</span> in <var>agent</var> with the following customizations:</p>
+    realm</span> with the following customizations:</p>
 
     <ul>
      <li><p>For the agent, use <var>agent</var>. <span class="XXX">This pointer is not yet defined
@@ -83724,9 +83724,13 @@ interface <dfn>Location</dfn> { // but see also <a href="#the-location-interface
 
      <li>
       <p>Let <var>realm execution context</var> be the result of <span>creating a new JavaScript
-      realm</span> in <var>agent</var> with the following customizations:</p>
+      realm</span> with the following customizations:</p>
 
       <ul>
+       <li><p>For the agent, use <var>agent</var>. <span class="XXX" data-x="">This pointer is not
+       yet defined in the JavaScript specification; see <a
+       href="https://github.com/tc39/ecma262/issues/1357">tc39/ecma262#1357</a>.</span></p></li>
+
        <li><p>For the global object, create a new <code>Window</code> object.</p></li>
 
        <li><p>For the global <b>this</b> binding, use <var>browsingContext</var>'s