[css-flexbox-1] Remove explicit mention of 'inner' size from aspect-ratio calculation, so 'aspect-ratio' text can apply instead. w3c#5246

Author: tabatkins

css-flexbox-1/Overview.bs

@@ -2555,7 +2555,7 @@ Line Length Determination</h3>
 						<li>a <a>definite</a> <a>cross size</a>,
 					</ul>
 					then the <a>flex base size</a> is calculated from
-					its <a lt="used value">used</a> <a lt="inner size">inner</a> <a>cross size</a>
+					its <a lt="used value">used</a> <a>cross size</a>
 					and the <a>flex item</a>’s intrinsic aspect ratio.
 
 				<li>
@@ -3756,6 +3756,17 @@ Changes since the <a href="https://www.w3.org/TR/2018/CR-css-flexbox-1-20181119/
 					</ul>
 				</del>
 			</blockquote>
+
+		<li id="change-2018-aspect-ratio-box">
+			Removed explicit mention of which box to use for calculating aspect-ratio,
+			to allow for behavior introduced by the new 'aspect-ratio' property in [[css-sizing-4]].
+			(<a href="https://github.com/w3c/csswg-drafts/issues/5246/">Issue 5246</a>)
+
+			<blockquote>
+				then the flex base size is calculated from
+				its used <del>inner</del> cross size
+				and the flex item’s intrinsic aspect ratio.
+			</blockquote>
 	</ul>
 
 <h3 id="changes-20171016">