Update CSS tests to revision 31d63cc79bd4c929ed582229e936d7b389f3e6ab

tests/wpt/css-tests/css-transforms-1_dev/html/transform-stacking-002.htm

@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<html><head>
+    <title>CSS Test (Transforms): Stacking, transform: none</title>
+    <link href="mailto:ayg@aryeh.name" rel="author" title="Aryeh Gregor">
+    <link href="http://www.w3.org/TR/css-transforms-1/#transform-rendering" rel="help">
+    <meta content='This tests that "transform: none" does not
+    create a new stacking context -- it should have no effect at all.' name="assert">
+    <link href="reference/transform-lime-square-ref.htm" rel="match">
+    <style>
+      body > div:first-child {
+        transform: none;
+      }
+      body > div:first-child > div {
+        height: 100px;
+        width: 100px;
+        background: lime;
+        z-index: 1;
+        position: relative;
+      }
+      body > div:last-child {
+        height: 100px;
+        width: 100px;
+        background: red;
+        position: relative;
+        bottom: 100px;
+      }
+    </style>
+  </head>
+  <body>
+    <div>
+      <div></div>
+    </div>
+    <div></div>
+  
+
+</body></html>