add aria-checked to row as well

Author: smhigley

index.html

@@ -6777,6 +6777,12 @@ <h5>Presentational Role Inheritance</h5>
 				<p>Rows contain <rref>cell</rref> or <rref>gridcell</rref> [=elements=], and thus serve to organize a <rref>table</rref>, <rref>grid</rref>, or <rref>treegrid</rref>.</p>
 				<p>While the row role can be used in a <rref>table</rref>, <rref>grid</rref>, or <rref>treegrid</rref>, the semantics of <sref>aria-expanded</sref>, <pref>aria-posinset</pref>, <pref>aria-setsize</pref>, and <pref>aria-level</pref> are only applicable to the hierarchical structure of an interactive tree grid. Therefore, authors MUST NOT apply <sref>aria-expanded</sref>, <pref>aria-posinset</pref>, <pref>aria-setsize</pref>, and <pref>aria-level</pref> to a <rref>row</rref> that descends from a <rref>table</rref> or <rref>grid</rref>, and user agents SHOULD NOT expose any of these four properties to assistive technologies unless the <rref>row</rref> descends from a <rref>treegrid</rref>.
 				</p>
+				<p>Authors SHOULD NOT specify both <sref>aria-selected</sref> and <sref>aria-checked</sref> on a single <rref>row</rref> element except in the extremely rare circumstances where all the following conditions are met:</p>
+				<ul>
+					<li>The meaning and purpose of <sref>aria-selected</sref> is different from the meaning and purpose of <sref>aria-checked</sref> in the user interface.</li>
+					<li>The user interface makes the meaning and purpose of each state apparent.</li>
+					<li>The user interface provides a separate method for controlling each state.</li>
+				</ul>
 				<p>Authors MUST ensure [=elements=] with <a>role</a> <code>row</code> are <a>accessibility children</a> of an element with the role <rref>table</rref>, <rref>grid</rref>, <rref>rowgroup</rref>, or <rref>treegrid</rref>.</p>
 				<p class="note" title="Usage of aria-disabled">While <sref>aria-disabled</sref> is currently supported on <rref>row</rref>, in a future version the working group plans to prohibit its  on elements with role <rref>row</rref> except when the element is in the context of a <rref>grid</rref> or <rref>treegrid</rref>.</p>
 			</div>
@@ -6844,6 +6850,7 @@ <h5>Presentational Role Inheritance</h5>
 						<th class="role-properties-head" scope="row">Supported States and Properties:</th>
 						<td class="role-properties">
 							<ul>
+								<li><sref>aria-checked</sref></li>
 								<li><pref>aria-colindex</pref></li>
 								<li><sref>aria-expanded</sref></li>
 								<li><pref>aria-level</pref></li>