[css-flexbox] Do min-content too.

Author: tabatkins

css-flexbox/Overview.bs

@@ -2892,9 +2892,12 @@ Intrinsic Sizes</h3>
 	Issue: Is this correct?
 
 	The <dfn>min-content main size</dfn> of a <i>single-line</i> flex container
-	is the sum of the flex container's items' <i>min-content contributions</i> in the <i>main axis</i>;
-	for a <i>multi-line</i> container,
-	it is the largest of those contributions.
+	is calculated identically to the <a>max-content main size</a>,
+	except that the <a>flex item’s</a> <a>min-content contribution</a> is used
+	instead of its <a>max-content contribution</a>.
+	For a <i>multi-line</i> container,
+	it is simply the largest <a>min-content contribution</a>
+	of all the <a>flex items</a> in the <a>flex container</a>.
 
 	The <dfn>min-content cross size</dfn> and  <dfn>max-content cross size</dfn> of a flex container
 	are the cross size of the flex container

css-flexbox/Overview.html

@@ -2799,9 +2799,12 @@ <h3 class="heading settled" data-level=9.9 id=intrinsic-sizes><span class=secno>
 <p class=issue id=issue-e0df87a5><a class=self-link href=#issue-e0df87a5></a>Is this correct?</p>
 
 <p>The <dfn data-dfn-type=dfn data-noexport="" id=min-content-main-size>min-content main size<a class=self-link href=#min-content-main-size></a></dfn> of a <a data-link-type=dfn href=#single-line title=single-line>single-line</a> flex container
-	is the sum of the flex container’s items' <a data-link-type=dfn href=http://dev.w3.org/csswg/css-sizing-3/#min-content-contribution title="min-content contributions">min-content contributions</a> in the <a data-link-type=dfn href=#main-axis title="main axis">main axis</a>;
-	for a <a data-link-type=dfn href=#multi-line title=multi-line>multi-line</a> container,
-	it is the largest of those contributions.</p>
+	is calculated identically to the <a data-link-type=dfn href=#max-content-main-size title="max-content main size">max-content main size</a>,
+	except that the <a data-link-type=dfn href=#flex-item title="flex item’s">flex item’s</a> <a data-link-type=dfn href=http://dev.w3.org/csswg/css-sizing-3/#min-content-contribution title="min-content contribution">min-content contribution</a> is used
+	instead of its <a data-link-type=dfn href=http://dev.w3.org/csswg/css-sizing-3/#max-content-contribution title="max-content contribution">max-content contribution</a>.
+	For a <a data-link-type=dfn href=#multi-line title=multi-line>multi-line</a> container,
+	it is simply the largest <a data-link-type=dfn href=http://dev.w3.org/csswg/css-sizing-3/#min-content-contribution title="min-content contribution">min-content contribution</a>
+	of all the <a data-link-type=dfn href=#flex-item title="flex items">flex items</a> in the <a data-link-type=dfn href=#flex-container title="flex container">flex container</a>.</p>
 
 <p>The <dfn data-dfn-type=dfn data-noexport="" id=min-content-cross-size>min-content cross size<a class=self-link href=#min-content-cross-size></a></dfn> and  <dfn data-dfn-type=dfn data-noexport="" id=max-content-cross-size>max-content cross size<a class=self-link href=#max-content-cross-size></a></dfn> of a flex container
 	are the cross size of the flex container