cc: Stop cache transform invertibility at Layer and LayerImpl

cc/layers/layer_impl.cc

Index: cc/layers/layer_impl.cc
diff --git a/cc/layers/layer_impl.cc b/cc/layers/layer_impl.cc
index cc41ff717f6c707d264d15d50d44792f8dcfd21a..e26942abf5279741f8bd19be0667272ccf23891f 100644
--- a/cc/layers/layer_impl.cc
+++ b/cc/layers/layer_impl.cc
@@ -70,7 +70,6 @@ LayerImpl::LayerImpl(LayerTreeImpl* tree_impl, int id)
       should_check_backface_visibility_(false),
       draws_content_(false),
       hide_layer_and_subtree_(false),
-      transform_is_invertible_(true),
       is_container_for_fixed_position_layers_(false),
       is_affected_by_page_scale_(true),
       was_ever_ready_since_last_transform_animation_(true),
@@ -523,7 +522,7 @@ void LayerImpl::PushPropertiesTo(LayerImpl* layer) {
   layer->SetUseLocalTransformForBackfaceVisibility(
       use_local_transform_for_backface_visibility_);
   layer->SetShouldCheckBackfaceVisibility(should_check_backface_visibility_);
-  layer->SetTransformAndInvertibility(transform_, transform_is_invertible_);
+  layer->SetTransform(transform_);
   if (layer_property_changed_)
     layer->NoteLayerPropertyChanged();
 
@@ -1231,18 +1230,6 @@ void LayerImpl::SetTransform(const gfx::Transform& transform) {
     return;
 
   transform_ = transform;
-  transform_is_invertible_ = transform_.IsInvertible();
-}
-
-void LayerImpl::SetTransformAndInvertibility(const gfx::Transform& transform,
-                                             bool transform_is_invertible) {
-  if (transform_ == transform) {
-    DCHECK(transform_is_invertible_ == transform_is_invertible)
-        << "Can't change invertibility if transform is unchanged";
-    return;
-  }
-  transform_ = transform;
-  transform_is_invertible_ = transform_is_invertible;
 }
 
 bool LayerImpl::TransformIsAnimating() const {