[css-grid] Only force full invalidation when grid item data change

third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html

Index: third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html
diff --git a/third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html b/third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html
index 510a7dce2e48f61696ff60bf36c24b0a2aa9f2c6..08a043a1d4a6d0f8d39d871f0604130d4c7d871d 100644
--- a/third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html
+++ b/third_party/WebKit/LayoutTests/fast/repaint/justify-self-change-expected.html
@@ -6,7 +6,6 @@ body {
 #container {
   display: grid;
   grid: 150px 150px / 100px 100px;
-  justify-items: center;
   width: 200px;
   height: 300px;
   background-color: red;
@@ -15,25 +14,35 @@ body {
   grid-row: 1;
   grid-column: 1;
   background-color: green;
-  border: solid thin blue;
-  width: 50px;
-  justify-self: start;
+  justify-self: center;
+  height: 300px;
+  width: 100px;
 }
 .item2 {
   grid-row: 1;
   grid-column: 2;
   background-color: green;
-  border: solid thin blue;
-  width: 50px;
+  justify-self: start;
+  height: 300px;
+  width: 100px;
+}
+.item3 {
+  grid-row: 1;
+  grid-column: 2;
+  background-color: green;
   justify-self: end;
+  height: 300px;
 }
 </style>
 <p style="height: 20px">Tests invalidation on justify-self style change. Passes if there is no red.</p>
 <div id="container">
   <div class="item1">
-    <div style="height: 150px"></div>
+    <div style="width: 50px;"></div>
   </div>
   <div class="item2">
-    <div style="height: 100px"></div>
+    <div style="width: 50px;"></div>
+  </div>
+  <div class="item3">
+    <div style="width: 50px;"></div>
   </div>
 </div>