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, 6 deletions

diff --git a/components/layout/context.rs b/components/layout/context.rs
index 7125c6ab44d..17a484e2930 100644
--- a/components/layout/context.rs
+++ b/components/layout/context.rs
@@ -7,13 +7,10 @@
 // for thread_local
 #![allow(unsafe_code)]
 
-use app_units::Au;
-use euclid::Rect;
 use fnv::FnvHasher;
 use gfx::display_list::WebRenderImageInfo;
 use gfx::font_cache_thread::FontCacheThread;
 use gfx::font_context::FontContext;
-use gfx_traits::LayerId;
 use heapsize::HeapSizeOf;
 use ipc_channel::ipc;
 use net_traits::image::base::Image;
@@ -87,9 +84,6 @@ pub struct SharedLayoutContext {
     /// Interface to the font cache thread.
     pub font_cache_thread: Mutex<FontCacheThread>,
 
-    /// The visible rects for each layer, as reported to us by the compositor.
-    pub visible_rects: Arc<HashMap<LayerId, Rect<Au>, BuildHasherDefault<FnvHasher>>>,
-
     /// A cache of WebRender image info.
     pub webrender_image_cache: Arc<RwLock<HashMap<(Url, UsePlaceholder),
                                                   WebRenderImageInfo,