Remove concept of Layers from Servo

Layers were a feature of the legacy drawing path. If we re-add them at
some point, it probably makes more sense to make them a product of
display list inspection.

This change also remove a bunch of dead painting code.

1 files changed, 0 insertions, 7 deletions

diff --git a/components/script_layout_interface/rpc.rs b/components/script_layout_interface/rpc.rs
index a470e76286e..94deab19b2b 100644
--- a/components/script_layout_interface/rpc.rs
+++ b/components/script_layout_interface/rpc.rs
@@ -5,7 +5,6 @@
 use app_units::Au;
 use euclid::point::Point2D;
 use euclid::rect::Rect;
-use gfx_traits::LayerId;
 use script_traits::UntrustedNodeAddress;
 use style::properties::longhands::{margin_top, margin_right, margin_bottom, margin_left, overflow_x};
 
@@ -28,8 +27,6 @@ pub trait LayoutRPC {
     fn node_overflow(&self) -> NodeOverflowResponse;
     /// Requests the scroll geometry of this node. Used by APIs such as `scrollTop`.
     fn node_scroll_area(&self) -> NodeGeometryResponse;
-    /// Requests the layer id of this node. Used by APIs such as `scrollTop`
-    fn node_layer_id(&self) -> NodeLayerIdResponse;
     /// Requests the node containing the point of interest
     fn hit_test(&self) -> HitTestResponse;
     /// Query layout for the resolved value of a given CSS property
@@ -51,10 +48,6 @@ pub struct NodeGeometryResponse {
 
 pub struct NodeOverflowResponse(pub Option<Point2D<overflow_x::computed_value::T>>);
 
-pub struct NodeLayerIdResponse {
-    pub layer_id: LayerId,
-}
-
 pub struct HitTestResponse {
     pub node_address: Option<UntrustedNodeAddress>,
 }