[CSS Grid Layout] Rename grid-definition-{columns|rows} to match the new syntax

LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html

Index: LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html
diff --git a/LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html b/LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html
index 17872e75513021ae1776d95434c0559ef0ec49fe..331ed48d1d9810fed0799b82a8f2b3ad525e5f35 100644
--- a/LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html
+++ b/LayoutTests/fast/css-grid-layout/minmax-spanning-resolution-rows.html
@@ -7,23 +7,23 @@ if (window.testRunner)
 <link href="resources/grid.css" rel="stylesheet">
 <style>
 .gridAutoAutoContent {
-    grid-definition-columns: 50px 100px;
-    grid-definition-rows: auto auto;
+    grid-template-columns: 50px 100px;
+    grid-template-rows: auto auto;
 }
 
 .gridFixedAutoContent {
-    grid-definition-columns: 50px 100px;
-    grid-definition-rows: 10px auto;
+    grid-template-columns: 50px 100px;
+    grid-template-rows: 10px auto;
 }
 
 .gridMinMaxMin {
-    grid-definition-columns: 50px 100px;
-    grid-definition-rows: minmax(min-content, 50px) minmax(max-content, 140px);
+    grid-template-columns: 50px 100px;
+    grid-template-rows: minmax(min-content, 50px) minmax(max-content, 140px);
 }
 
 .gridMinMaxMax {
-    grid-definition-columns: 50px 100px;
-    grid-definition-rows: minmax(50px, min-content) minmax(40px, max-content);
+    grid-template-columns: 50px 100px;
+    grid-template-rows: minmax(50px, min-content) minmax(40px, max-content);
 }
 </style>
 <script src="../../resources/check-layout.js"></script>