[css-typed-om] replace is2D() method with attribute in CSSTransformValue.

third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html

Index: third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html
diff --git a/third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html b/third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html
index 9b669b01e2e95c37f35662e69a6b043107269d89..fb11be9b1cdb2d59451fd54def431e9a6e0c4643 100644
--- a/third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html
+++ b/third_party/WebKit/LayoutTests/typedcssom/cssTransformValue.html
@@ -13,14 +13,14 @@ test(function() {
   var transformArray = [new CSSScale(2,2),
     new CSSMatrixComponent(1,1,1,1,1,1), new CSSScale(5,6)];
   var transformValue = new CSSTransformValue(transformArray);
-  assert_true(transformValue.is2D());
+  assert_true(transformValue.is2D);
 }, "is2D returns true for transformValues containing only 2D transformComponents");
 
 test(function() {
   var transformArray = [new CSSScale(2,2),
     new CSSMatrixComponent(1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1), new CSSScale(5,6)];
   var transformValue = new CSSTransformValue(transformArray);
-  assert_false(transformValue.is2D());
+  assert_false(transformValue.is2D);
 }, "is2D returns false for transformValues containing both 2D and 3D transformComponents");
 
 test(function() {