Unprefix flexbox tests.

LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html

Index: LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html
diff --git a/LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html b/LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html
index c35b774fd160d29a6420fd682967e37696e1255a..fa43030d9a82a03aa6b2f4c474736cdd4799f158 100644
--- a/LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html
+++ b/LayoutTests/css3/flexbox/columns-height-set-via-top-bottom.html
@@ -9,7 +9,7 @@
     border: 2px solid orange;
 }
 .flexbox {
-    -webkit-flex-direction: column;
+    flex-direction: column;
     position: absolute;
     top: 0;
     right: 0;
@@ -30,14 +30,14 @@
 <div class="container">
     <div data-expected-height=100 class="flexbox column">
         <div data-expected-height=30 data-expected-width=80 style="height: 30px"></div>
-        <div data-expected-height=50 data-expected-width=80 style="-webkit-flex: 1; -moz-flex: 1"></div>
+        <div data-expected-height=50 data-expected-width=80 style="flex: 1; -moz-flex: 1"></div>
     </div>
 </div>
 
 <div class="container">
     <div class="flexbox column wrap">
         <div data-expected-height=50 data-expected-width=40 style="height: 50px"></div>
-        <div data-expected-height=80 data-expected-width=40 style="-webkit-flex: 1 50px; -moz-flex: 1 50px"></div>
+        <div data-expected-height=80 data-expected-width=40 style="flex: 1 50px; -moz-flex: 1 50px"></div>
     </div>
 </div>
 </body>