[css-tables] Set needsLayout on cells when column border width changes

third_party/WebKit/LayoutTests/fast/table/change-col-border-width.html

Index: third_party/WebKit/LayoutTests/fast/table/change-col-border-width.html
diff --git a/third_party/WebKit/LayoutTests/fast/table/change-tbody-border-width.html b/third_party/WebKit/LayoutTests/fast/table/change-col-border-width.html
similarity index 61%
copy from third_party/WebKit/LayoutTests/fast/table/change-tbody-border-width.html
copy to third_party/WebKit/LayoutTests/fast/table/change-col-border-width.html
index 6760bc588672080ccd44def486f9d5f0410e123a..7866ae066077586bc862dd6b4f682800a29f725b 100644
--- a/third_party/WebKit/LayoutTests/fast/table/change-tbody-border-width.html
+++ b/third_party/WebKit/LayoutTests/fast/table/change-col-border-width.html
@@ -9,22 +9,20 @@
 <script src="../../resources/check-layout.js"></script>
 <script src="../../resources/run-after-layout-and-paint.js"></script>
 <script type="text/javascript">
-    function shrinkSectionBorder() {
-        document.getElementById("section").style.borderWidth = "4px";
+    function shrinkColumnBorder() {
+        theColumn.style.borderWidth = "4px";
         checkLayout("div");
     }
-    runAfterLayoutAndPaint(shrinkSectionBorder, true);
+    runAfterLayoutAndPaint(shrinkColumnBorder, true);
 </script>
 <p>Changing a collapsed border's width should change the width of the table and the width of a shrink-to-fit containing block.</p>
 <p>There should be a square with a 4px inner blue border and a 1px outer black border.</p>
-<p>Firefox 50.0a1 (nightly 2016-07-07) fails this, so it should probably be upstreamed, except it uses chrome-specific `runAfterLayoutAndPaint`.</p>
-<p>The table cell has rowspan=2 because we almost didn't cover the case where a cell's rowspan exceeded the declared rows.</p>
+<p>Firefox 50.0a1 (nightly 2016-07-14) fails this, so it should probably be upstreamed, except it uses chrome-specific `runAfterLayoutAndPaint`.</p>
 <div style="float:left; border: 1px solid black" data-expected-width=60>
     <table style="border-collapse:collapse" data-expected-width=58 data-expected-height=58>
-        <tbody style="border:18px solid lightblue" id="section">
-            <tr>
-                <td rowspan=2></td>
-            </tr>
-        </tbody>
+        <col style="border:18px solid lightblue" id="theColumn">
+        <tr>
+            <td></td>
+        </tr>
     </table>
 </div>