Turn css3/unicode-bidi-isolate-basic into a reftest.

LayoutTests/css3/unicode-bidi-isolate-basic-expected.html

Index: LayoutTests/css3/unicode-bidi-isolate-basic-expected.html
diff --git a/LayoutTests/css3/unicode-bidi-isolate-basic.html b/LayoutTests/css3/unicode-bidi-isolate-basic-expected.html
similarity index 96%
copy from LayoutTests/css3/unicode-bidi-isolate-basic.html
copy to LayoutTests/css3/unicode-bidi-isolate-basic-expected.html
index ef1c5ac29c9670edea978db9561722f47ee6be8e..649c704f739191591ac2a6eb7abbb5fca1e4efc5 100644
--- a/LayoutTests/css3/unicode-bidi-isolate-basic.html
+++ b/LayoutTests/css3/unicode-bidi-isolate-basic-expected.html
@@ -38,7 +38,6 @@ var strongLTR = function() { return strongLTRs[seed++ % strongLTRs.length]; }
 var charClassExamples = [neutral, strongRTL, strongLTR];
 var possibleDirs = ['ltr', 'rtl'];
 
-var testStyle = "unicode-bidi: -webkit-isolate";
 var controlStyle = "display: inline-block";
 
 for (outerDirIndex in possibleDirs) {
@@ -65,7 +64,7 @@ for (outerDirIndex in possibleDirs) {
                         return outerDiv;
                     }
                     expected.appendChild(caseWithStyle(controlStyle));
-                    actual.appendChild(caseWithStyle(testStyle));
+                    actual.appendChild(caseWithStyle(controlStyle));
                 }
             }
         }