Unprefix flexbox tests.

LayoutTests/css3/flexbox/box-sizing.html

Index: LayoutTests/css3/flexbox/box-sizing.html
diff --git a/LayoutTests/css3/flexbox/box-sizing.html b/LayoutTests/css3/flexbox/box-sizing.html
index fad9a9f5b270fec61c65404fff34f0bf1f263872..9af45976b78b9e55f04f33dd800d017eaff6cd84 100644
--- a/LayoutTests/css3/flexbox/box-sizing.html
+++ b/LayoutTests/css3/flexbox/box-sizing.html
@@ -80,9 +80,9 @@ All blue boxes are 100x100px with box-sizing: border-box and 2px border (4px bor
 
 <h3>flex-flow: column, flex-box has box-sizing: border-box, flex items have flex: 1</h3>
 <div class="flexbox column" style="box-sizing: border-box; border: 2px solid lightblue; padding: 3px; height: 343px; width: 100px;" data-expected-width=100 data-expected-height=343>
-    <div style="-webkit-flex: 1; -moz-flex: 1" data-expected-height=111></div>
-    <div style="-webkit-flex: 1; -moz-flex: 1" data-expected-height=111></div>
-    <div style="-webkit-flex: 1; -moz-flex: 1" data-expected-height=111></div>
+    <div style="flex: 1; -moz-flex: 1" data-expected-height=111></div>
+    <div style="flex: 1; -moz-flex: 1" data-expected-height=111></div>
+    <div style="flex: 1; -moz-flex: 1" data-expected-height=111></div>
 </div>
 
 <script>