CSS manual tests: reduce usage of webkit prefix

third_party/WebKit/ManualTests/image-resampling-with-scale.html

Index: third_party/WebKit/ManualTests/image-resampling-with-scale.html
diff --git a/third_party/WebKit/ManualTests/image-resampling-with-scale.html b/third_party/WebKit/ManualTests/image-resampling-with-scale.html
index 35a1a8cb95c800602b92f3a4da3b6d6ce1603e32..718724ae22cf01268eb51e3b7b12e4c2ca25d5b6 100644
--- a/third_party/WebKit/ManualTests/image-resampling-with-scale.html
+++ b/third_party/WebKit/ManualTests/image-resampling-with-scale.html
@@ -16,8 +16,8 @@ function doScaleTest() {
     image2.setAttribute('src', imgSrc);
     intervalId = setInterval(function() {
         scale += 0.001;
-        image1.style.webkitTransform = 'scale(' + scale + ')';
-        layer2.style.webkitTransform = 'scale(' + scale + ')';
+        image1.style.transform = 'scale(' + scale + ')';
+        layer2.style.transform = 'scale(' + scale + ')';
         if (scale > 1.5)
             window.clearInterval(intervalId);
     }, 10);