return GeolocationPositionError instance

Author: sadym-chromium

index.bs

@@ -182,6 +182,7 @@ spec: GEOMETRY; urlPrefix: https://drafts.fxtf.org/geometry/
     text: height dimension; url: rectangle-height-dimension
 spec: GEOLOCATION; urlPrefix: https://www.w3.org/TR/geolocation/
   type: dfn
+    text: GeolocationPositionError; url: #dom-geolocationpositionerror
     text: POSITION_UNAVAILABLE; url: #dom-geolocationpositionerror-position_unavailable
     text: set emulated position data; url: #dfn-set-emulated-position-data
 spec: HTML; urlPrefix: https://html.spec.whatwg.org/multipage/
@@ -5679,8 +5680,9 @@ The [=remote end steps=] with |command parameters| are:
    1. Assert |command parameters|["<code>error</code>"]["<code>type</code>"] equals
       "<code>positionUnavailable</code>".
 
-   1. Let |emulated position data| be a [=/map=] with value of
-      «"code" → [=POSITION_UNAVAILABLE=], "message" → ""».
+   1. Let |emulated position data| be a [=/map=] matching [=GeolocationPositionError=]
+      production, with <code>code</code> field set to [=POSITION_UNAVAILABLE=] and
+      <code>message</code> field set to the empty string.
 
 1. Otherwise, let |emulated position data| be
    |command parameters|["<code>coordinates</code>"].