Unprefix flexbox tests.

LayoutTests/css3/flexbox/flex-flow-margins.html

Index: LayoutTests/css3/flexbox/flex-flow-margins.html
diff --git a/LayoutTests/css3/flexbox/flex-flow-margins.html b/LayoutTests/css3/flexbox/flex-flow-margins.html
index 459cfdf8d578c2598c64926f56421b1f157f6662..3eb792200ab864e9f5e232794141c52e5e404393 100644
--- a/LayoutTests/css3/flexbox/flex-flow-margins.html
+++ b/LayoutTests/css3/flexbox/flex-flow-margins.html
@@ -8,7 +8,7 @@
     display: inline-block;
 }
 .flexbox {
-    display: -webkit-flex;
+    display: flex;
     background-color: grey;
     width: 100px;
     height: 100px;
@@ -35,16 +35,16 @@
     -webkit-writing-mode: vertical-lr;
 }
 .row {
-    -webkit-flex-flow: row;    
+    flex-flow: row;    
 }
 .row-reverse {
-    -webkit-flex-flow: row-reverse;
+    flex-flow: row-reverse;
 }
 .column {
-    -webkit-flex-flow: column;
+    flex-flow: column;
 }
 .column-reverse {
-    -webkit-flex-flow: column-reverse;
+    flex-flow: column-reverse;
 }
 .physical {
     margin: 10px 20px 30px 40px;
@@ -236,7 +236,7 @@ writingModes.forEach(function(writingMode) {
                 container.setAttribute('data-expected-height', expectations.container[1]);
 
                 container.innerHTML = '<div class="flexbox ' + flexboxClassName + '" ' + flexboxExpectations + '>\n' +
-                    '<div style="-webkit-flex: 1 auto; height: 20px; width: 20px;" ' + flexItemExpectations + '></div>\n' +
+                    '<div style="flex: 1 auto; height: 20px; width: 20px;" ' + flexItemExpectations + '></div>\n' +
                 '</div>';
 
                 document.body.appendChild(container);