Don't repeat header groups when one row of content doesn't fit on the first page

third_party/WebKit/LayoutTests/fragmentation/repeating-thead-no-room-for-content-row-on-first-page.html

Index: third_party/WebKit/LayoutTests/fragmentation/repeating-thead-no-room-for-content-row-on-first-page.html
diff --git a/third_party/WebKit/LayoutTests/fragmentation/single-line-cells.html b/third_party/WebKit/LayoutTests/fragmentation/repeating-thead-no-room-for-content-row-on-first-page.html
similarity index 60%
copy from third_party/WebKit/LayoutTests/fragmentation/single-line-cells.html
copy to third_party/WebKit/LayoutTests/fragmentation/repeating-thead-no-room-for-content-row-on-first-page.html
index 911c680fb60a6ab940dbc0f339071d41603a7785..4fc9c30b5dd6cd80e9bc659a3afc07023f609bb1 100644
--- a/third_party/WebKit/LayoutTests/fragmentation/single-line-cells.html
+++ b/third_party/WebKit/LayoutTests/fragmentation/repeating-thead-no-room-for-content-row-on-first-page.html
@@ -3,45 +3,40 @@
 table {
     border-collapse: collapse;
 }
-td {
-    background-color: #ddd;
-    border: 1px solid black;
-}
-tr {
+thead, tr {
     break-inside: avoid;
 }
 </style>
-<p>crbug.com/99124: Table rows shouldn't straddle page boundaries.</p>
-<div style="-webkit-columns:3; line-height: 20px; column-fill: auto; height:190px; background-color: yellow;">
-    <table>
-        <tr><td>Te</td><td>xt</td></tr>
-        <tr><td>Te</td><td>xt</td></tr>
-        <tr><td>Te</td><td>xt</td></tr>
-        <tr><td>Te</td><td>xt</td></tr>
-        <tr><td>Te</td><td>xt</td></tr>
+<p>crbug.com/621258: Drop the repeated header if there isn't room for at least one content row on the page.</p>
+<div style="-webkit-columns:3; line-height: 20px; column-fill: auto; height:190px;">
+    <table id="top">
+        <thead id="top-thead">
+            <tr>
+                <th><div style="height: 180px;">Col 1</div></th>
+            </tr>
+        </thead>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
-        <tr><td class="td" data-total-y=191>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
+        <tr><td class="cell" data-total-y=380>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
-        <tr><td class="td" data-total-y=381>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
+        <tr><td class="cell" data-total-y=570>Te</td><td>xt</td></tr>
         <tr><td>Te</td><td>xt</td></tr>
     </table>
 </div>
 <div id="console"></div>
 <script src="../resources/check-layout.js"></script>
 <script>
-    checkLayout(".td", document.getElementById("console"));
+checkLayout(".cell", document.getElementById("console"));
 </script>
-