Make configurationForViewport match production code

LayoutTests/css3/device-adapt/opera/cascading-002.html

Index: LayoutTests/css3/device-adapt/opera/cascading-002.html
diff --git a/LayoutTests/css3/device-adapt/opera/cascading-002.html b/LayoutTests/css3/device-adapt/opera/cascading-002.html
index 4d402e106e93cf20659f1cc21d38946beefc1eee..f5d6bf03554bb215c7b4a76197f87cef8c42e7f7 100644
--- a/LayoutTests/css3/device-adapt/opera/cascading-002.html
+++ b/LayoutTests/css3/device-adapt/opera/cascading-002.html
@@ -49,14 +49,10 @@
 
     if (window.testRunner) {
         viewport.fontSize = parseInt(getComputedStyle(testElm, "").fontSize);
-        viewport.deviceWidth = 320;
-        viewport.deviceHeight = 480;
         viewport.initialWidth = 320;
         viewport.initialHeight = 352;
 
         var vpString = internals.configurationForViewport(document, 1,
-                                                          viewport.deviceWidth,
-                                                          viewport.deviceHeight,
                                                           viewport.initialWidth,
                                                           viewport.initialHeight);