[css-ui] Remove nav-left nav-right nav-up nav-down from CSS 3 UI at-risk list

Author: therealglazou

css-ui/Overview.src.html

@@ -267,8 +267,7 @@ <h3 class="no-num no-toc" id="atrisk">Features at risk</h3>
  <li>'content' property value: icon</li>
  <li>'icon' property</li>
  <li>'ime-mode' property</li>
- <li>'nav-index', 'nav-up', 'nav-down', 'nav-right', 'nav-left'
-     properties</li>
+ <li>'nav-index' property</li>
  <li>'text-overflow' property value: &lt;string&gt;</li>
  <li>'text-overflow' property 2-value syntax and definition.</li>
 </ul>
@@ -1771,12 +1770,6 @@ <h5 class="no-num no-toc">Example: positioned buttons</h5>
 <p>Whatever markup sequence the buttons may have (which is not specified in this example) is irrelevant in this case because they are positioned, and yet, it is still important to ensure focus navigation behaviors which relate reasonably to the specified layout.</p>
 </div>
 
-<p class="note">
-Note: The 'nav-up', 'nav-right', 'nav-down', and 'nav-left' properties
-are at risk.
-</p>
-
-
 <h4 id="input-method-editor">Input method editor: the <span class="property">'ime-mode'</span> property</h4>
 
 <table class="propdef"><tbody>
@@ -1930,6 +1923,8 @@ <h3 class="no-num" id="changes-list">List of substantial changes</h3>
 
 <li>'<span class="property">text-overflow</span>' property - new!</li>
 
+<li>2013-nov-28: '<span class="property">nav-up</span>', '<span class="property">nav-right</span>', '<span class="property">nav-down</span>', and '<span class="property">nav-left</span>' properties removed from the "at risk" list</li>
+
 </ul>