Remove unnecessary security check from measureText()

Fonts have no origins. This was missed in
440a8eb.

Fixes #3992.

Author: annevk

source

@@ -63155,17 +63155,8 @@ v6DVT (also check for '- -' bits in the part above) -->
   argument, <var>text</var>. When the method is invoked, the user agent must run the
   <span>text preparation algorithm</span>, passing it <var>text</var> and the object implementing
   the <code>CanvasText</code> interface, and then using the returned <span>inline box</span> must
-  create a new <code>TextMetrics</code> object with members behaving as described in the following
-  list.
-<!--ADD-TOPIC:Security-->
-  If doing these measurements requires using a font that has an <span>origin</span> that is not the
-  <span data-x="same origin">same</span> as that of the <code>Document</code> object that owns the
-  <code>canvas</code> element (even if "using a font" means just checking if that font has a
-  particular glyph in it before falling back to another font), then the method, when invoked, must
-  throw a <span>"<code>SecurityError</code>"</span> <code>DOMException</code>.
-<!--REMOVE-TOPIC:Security-->
-  Otherwise, it must return the new <code>TextMetrics</code> object.
-  <ref spec=CSS>
+  return a new <code>TextMetrics</code> object with members behaving as described in the following
+  list: <ref spec=CSS>
   <!--INSERT FINGERPRINT-->
   </p>
 
@@ -121549,6 +121540,7 @@ INSERT INTERFACES HERE
   Jules Cl&eacute;ment-Ripoche,
   Julian Reschke,
   Julio Lopez,
+  小勝　純 (Jun Kokatsu),
   Jun Yang (harttle),
   Jungkee Song,
   J&uuml;rgen Jeka,