[CSS Grid Layout] Rename grid-{rows|columns} to grid-definition-{rows|columns}

LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html

Index: LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html
diff --git a/LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html b/LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html
index 90bf821e49eceb7c53c80349593f40a715c60225..cb4d8851bc03db02794efab0e6704fff7cc40b8e 100644
--- a/LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html
+++ b/LayoutTests/fast/css-grid-layout/grid-item-with-percent-height-in-auto-height-grid-resolution.html
@@ -7,13 +7,13 @@ if (window.testRunner)
 <link href="resources/grid.css" rel="stylesheet">
 <style>
 .gridMinMaxMinMax {
-    grid-columns: 50px 100px;
-    grid-rows: minmax(10px, -webkit-min-content) minmax(50px, 100px);
+    grid-definition-columns: 50px 100px;
+    grid-definition-rows: minmax(10px, -webkit-min-content) minmax(50px, 100px);
 }
 
 .gridAutoAuto {
-    grid-columns: 50px 100px;
-    grid-rows: auto auto;
+    grid-definition-columns: 50px 100px;
+    grid-definition-rows: auto auto;
 }
 </style>
 <script src="../../resources/check-layout.js"></script>