[css3-ui] add outline-style auto to SecPriv 11 UA native UI.

Author: tantek

css-ui/Overview.bs

@@ -1582,7 +1582,7 @@ Per the <a href="https://w3ctag.github.io/security-questionnaire/#questions">Que
 </li>
 
 <li>Does this specification allow an origin some measure of control over a user agent’s native UI?
-<p>Yes. The 'cursor' and 'caret-color' properties enable the page to change the display of the cursor and text insertion caret of the user agent’s native UI.</p>
+<p>Yes. The 'cursor' and 'caret-color' properties enable the page to change the display of the cursor and text insertion caret of the user agent’s native UI. In addition the 'outline-style' property’s ''outline-style/auto'' value (and thus 'outline' shorthand) enable the page to potentially display a native focused element outline presentation around any element.</p>
 </li>
 
 <li>Does this specification expose temporary identifiers to the web?

css-ui/Overview.html

@@ -3524,7 +3524,7 @@ <h2 class="no-num heading settled" id="security-privacy-considerations"><span cl
 
     <li>Does this specification allow an origin some measure of control over a user agent’s native UI?
 
-     <p>Yes. The <a class="property" data-link-type="propdesc" href="#propdef-cursor">cursor</a> and <a class="property" data-link-type="propdesc" href="#propdef-caret-color">caret-color</a> properties enable the page to change the display of the cursor and text insertion caret of the user agent’s native UI.</p>
+     <p>Yes. The <a class="property" data-link-type="propdesc" href="#propdef-cursor">cursor</a> and <a class="property" data-link-type="propdesc" href="#propdef-caret-color">caret-color</a> properties enable the page to change the display of the cursor and text insertion caret of the user agent’s native UI. In addition the <a class="property" data-link-type="propdesc" href="#propdef-outline-style">outline-style</a> property’s <span class="css">auto</span> value (and thus <a class="property" data-link-type="propdesc" href="#propdef-outline">outline</a> shorthand) enable the page to potentially display a native focused element outline presentation around any element.</p>