Remove remaining testing of getPropertyCSSValue

LayoutTests/transitions/multiple-text-shadow-transition.html

Index: LayoutTests/transitions/multiple-text-shadow-transition.html
diff --git a/LayoutTests/transitions/multiple-text-shadow-transition.html b/LayoutTests/transitions/multiple-text-shadow-transition.html
index f040c634f8213bd697454a739a252f628bb9afa1..6cb2263cad4133a6ddbc96716d3a94d5f37b5557 100644
--- a/LayoutTests/transitions/multiple-text-shadow-transition.html
+++ b/LayoutTests/transitions/multiple-text-shadow-transition.html
@@ -44,8 +44,9 @@
     function checkShadow()
     {
         var container = document.getElementById('container');
-        var shadow = window.getComputedStyle(container).getPropertyCSSValue('text-shadow');
-        
+        var shadow = window.getComputedStyle(container).textShadow;
+        shadow = shadow.replace(/rgb([^)]*)/g, "color").split(",");
+
         var result = document.getElementById('result');
         if (shadow.length == 5)
             result.innerHTML = 'PASS: saw 5 shadows during the transition';