Unprefix the @viewport rule of CSS Device Adaptation spec

LayoutTests/css3/device-adapt/opera/cssom-001.html

Index: LayoutTests/css3/device-adapt/opera/cssom-001.html
diff --git a/LayoutTests/css3/device-adapt/opera/cssom-001.html b/LayoutTests/css3/device-adapt/opera/cssom-001.html
index 277e0b95795840f236e4f741cee30e68015f1c68..7e2626a69253ec44d85082c82607ceee346f99c6 100644
--- a/LayoutTests/css3/device-adapt/opera/cssom-001.html
+++ b/LayoutTests/css3/device-adapt/opera/cssom-001.html
@@ -14,7 +14,7 @@
    html, body, #test { width: 100%; height: 100%; }
    #log { padding: 1em; display: none; }
    /* Reset viewport values to initial values to ignore UA stylesheet. */
-   @-webkit-viewport {
+   @viewport {
     width: auto;
     height: auto;
     zoom: auto;
@@ -27,7 +27,7 @@
   </style>
   <style type="text/css">
    /* CSS for the test below. */
-   @-webkit-viewport { width: auto 1200px; min-height: 700px; max-zoom: 100% }
+   @viewport { width: auto 1200px; min-height: 700px; max-zoom: 100% }
    /* Set root element font-size to something different from the initial
       font-size to make sure 'rem' and 'em' for @viewport is based on the
       initial font-size, not the root element font-size. */
@@ -89,7 +89,7 @@
 
     /* Check viewport values. */
     test.step(function(){
-        assert_equals(CSSRule.WEBKIT_VIEWPORT_RULE, 15); assert_equals(testStyleSheet.cssRules.item(0).type, 15);
+        assert_equals(CSSRule.VIEWPORT_RULE, 15); assert_equals(testStyleSheet.cssRules.item(0).type, 15);
     });
 
     /* Finished. Show the results. */