cc: Stop cache transform invertibility at Layer and LayerImpl

cc/layers/layer_impl_unittest.cc

Index: cc/layers/layer_impl_unittest.cc
diff --git a/cc/layers/layer_impl_unittest.cc b/cc/layers/layer_impl_unittest.cc
index 714093eefa28a44a1e8eb30d82da07e51dec63d7..9149c496bfb8d2f0b526e89750104b75517df0f2 100644
--- a/cc/layers/layer_impl_unittest.cc
+++ b/cc/layers/layer_impl_unittest.cc
@@ -471,14 +471,12 @@ TEST(LayerImplTest, TransformInvertibility) {
   std::unique_ptr<LayerImpl> layer =
       LayerImpl::Create(host_impl.active_tree(), 1);
   EXPECT_TRUE(layer->transform().IsInvertible());
-  EXPECT_TRUE(layer->transform_is_invertible());
 
   gfx::Transform transform;
   transform.Scale3d(
       SkDoubleToMScalar(1.0), SkDoubleToMScalar(1.0), SkDoubleToMScalar(0.0));
   layer->SetTransform(transform);
   EXPECT_FALSE(layer->transform().IsInvertible());
-  EXPECT_FALSE(layer->transform_is_invertible());
 
   transform.MakeIdentity();
   transform.ApplyPerspectiveDepth(SkDoubleToMScalar(100.0));
@@ -491,7 +489,6 @@ TEST(LayerImplTest, TransformInvertibility) {
 
   layer->SetTransform(transform);
   EXPECT_TRUE(layer->transform().IsInvertible());
-  EXPECT_TRUE(layer->transform_is_invertible());
 }
 
 class LayerImplScrollTest : public testing::Test {