Unprefix -webkit-min-content and -webkit-max-content for grid layout

LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html

Index: LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html
diff --git a/LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html b/LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html
index b615fc219c392f8bf2718b4d75326c68b7311a21..4709633189fbb1b8b6813627c1fa8a326082f260 100755
--- a/LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html
+++ b/LayoutTests/fast/css-grid-layout/grid-columns-rows-get-set.html
@@ -45,12 +45,12 @@ if (window.testRunner)
     grid-rows: minmax(20px, 50%);
 }
 .gridWithMinContent {
-    grid-columns: -webkit-min-content;
-    grid-rows: -webkit-min-content;
+    grid-columns: min-content;
+    grid-rows: min-content;
 }
 .gridWithMaxContent {
-    grid-columns: -webkit-max-content;
-    grid-rows: -webkit-max-content;
+    grid-columns: max-content;
+    grid-rows: max-content;
 }
 .gridWithFraction {
     grid-columns: 1fr;