[CSS Grid Layout] New alignment related repaint layout tests.

LayoutTests/fast/repaint/align-self-overflow-change.html

Index: LayoutTests/fast/repaint/align-self-overflow-change.html
diff --git a/LayoutTests/fast/repaint/align-self-overflow-change.html b/LayoutTests/fast/repaint/align-self-overflow-change.html
index 372c78fdc19cfc8ab8cac3e899febcff7ec8eaa0..56751d002d6396e480d15edfe31449508f20898b 100644
--- a/LayoutTests/fast/repaint/align-self-overflow-change.html
+++ b/LayoutTests/fast/repaint/align-self-overflow-change.html
@@ -13,7 +13,7 @@ body {
 }
 #container {
   display: grid;
-  grid: 100px 100px / 150px 150px;
+  grid: 200px / 150px 150px;
   width: 200px;
   height: 300px;
   background-color: red;
@@ -23,16 +23,12 @@ body {
   grid-column: 1;
   align-self: end true;
   background-color: green;
-  border: solid thin blue;
-  width: 50px;
 }
 .item2 {
-  grid-row: 1;
-  grid-column: 2;
+  grid-row: 2;
+  grid-column: 1;
   align-self: end true;
   background-color: green;
-  border: solid thin blue;
-  width: 50px;
 </style>
 <p style="height: 20px">Tests invalidation on align-self style change (just overflow). Passes if there is no red.</p>
 <div id="container">
@@ -40,6 +36,6 @@ body {
     <div style="height: 200px"></div>
   </div>
   <div class="item2">
-    <div style="height: 175px"></div>
+    <div style="height: 100px"></div>
   </div>
 </div>