Use typed transforms in stacking contexts

1 files changed, 4 insertions, 3 deletions

diff --git a/components/layout/flow.rs b/components/layout/flow.rs
index 399a21087c4..40a1b90972f 100644
--- a/components/layout/flow.rs
+++ b/components/layout/flow.rs
@@ -29,7 +29,7 @@ use app_units::Au;
 use block::{BlockFlow, FormattingContextType};
 use context::LayoutContext;
 use display_list::{DisplayListBuildState, StackingContextCollectionState};
-use euclid::{Transform3D, Point2D, Vector2D, Rect, Size2D};
+use euclid::{Point2D, Vector2D, Rect, Size2D};
 use flex::FlexFlow;
 use floats::{Floats, SpeculatedFloatPlacement};
 use flow_list::{FlowList, FlowListIterator, MutFlowListIterator};
@@ -67,6 +67,7 @@ use table_colgroup::TableColGroupFlow;
 use table_row::TableRowFlow;
 use table_rowgroup::TableRowGroupFlow;
 use table_wrapper::TableWrapperFlow;
+use webrender_api::LayoutTransform;
 
 /// This marker trait indicates that a type is a struct with `#[repr(C)]` whose first field
 /// is of type `BaseFlow` or some type that also implements this trait.
@@ -335,8 +336,8 @@ pub trait Flow: HasBaseFlow + fmt::Debug + Sync + Send + 'static {
         let transform_2d = self.as_block()
                                .fragment
                                .transform_matrix(&position)
-                               .unwrap_or(Transform3D::identity())
-                               .to_2d();
+                               .unwrap_or(LayoutTransform::identity())
+                               .to_2d().to_untyped();
         let transformed_overflow = Overflow {
             paint: f32_rect_to_au_rect(transform_2d.transform_rect(
                                        &au_rect_to_f32_rect(overflow.paint))),