[selectors] More domain->origin transforms.

Author: tabatkins

selectors/Overview.html

@@ -2709,10 +2709,10 @@ <h3 id=local-pseudo><span class=secno>8.3. </span> The local link
     whose target is in the same origin as the document's URL
 
    <li>‘<code class=css>:local-link(1)</code>’ represents a link element
-    whose target has the same domain and first path segment
+    whose target has the same origin and first path segment
 
    <li>‘<code class=css>:local-link(2)</code>’ represents a link element
-    whose target has the same domain, first, and second path segments
+    whose target has the same origin, first, and second path segments
 
    <li>etc.
   </ul>

selectors/Overview.src.html

@@ -1821,8 +1821,8 @@ <h3 id="local-pseudo">
     indicates the number of path levels to match:
   <ul>
     <li>'':local-link(0)'' represents a link element whose target is in the same origin as the document's URL
-    <li>'':local-link(1)'' represents a link element whose target has the same domain and first path segment
-    <li>'':local-link(2)'' represents a link element whose target has the same domain, first, and second path segments
+    <li>'':local-link(1)'' represents a link element whose target has the same origin and first path segment
+    <li>'':local-link(2)'' represents a link element whose target has the same origin, first, and second path segments
     <li>etc.
   </ul>