canvas: Remove all the canvas layerization infrastructure

It was never complete, and with webrender as a backend the way we render
WebGL contexts has changed a bit.

This should remove quite a bit of overhead.

1 files changed, 2 insertions, 16 deletions

diff --git a/components/canvas/webgl_paint_thread.rs b/components/canvas/webgl_paint_thread.rs
index 08d8ea2f4b6..102a9f85f32 100644
--- a/components/canvas/webgl_paint_thread.rs
+++ b/components/canvas/webgl_paint_thread.rs
@@ -2,16 +2,14 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
-use canvas_traits::{CanvasCommonMsg, CanvasMsg, CanvasPixelData, CanvasData, CanvasWebGLMsg};
-use canvas_traits::{FromLayoutMsg, FromPaintMsg};
+use canvas_traits::{CanvasCommonMsg, CanvasMsg, CanvasPixelData, CanvasData, CanvasWebGLMsg, FromLayoutMsg};
 use euclid::size::Size2D;
 use gleam::gl;
 use ipc_channel::ipc::{self, IpcSender, IpcSharedMemory};
 use ipc_channel::router::ROUTER;
-use layers::platform::surface::NativeSurface;
 use offscreen_gl_context::{ColorAttachmentType, GLContext, GLContextAttributes, NativeGLContext};
 use std::borrow::ToOwned;
-use std::sync::mpsc::{Sender, channel};
+use std::sync::mpsc::channel;
 use util::thread::spawn_named;
 use util::vec::byte_swap;
 use webrender_traits;
@@ -93,12 +91,6 @@ impl WebGLPaintThread {
                                 painter.send_data(chan),
                         }
                     }
-                    CanvasMsg::FromPaint(message) => {
-                        match message {
-                            FromPaintMsg::SendNativeSurface(chan) =>
-                                painter.send_native_surface(chan),
-                        }
-                    }
                     CanvasMsg::Canvas2d(_) => panic!("Wrong message sent to WebGLThread"),
                 }
             }
@@ -147,12 +139,6 @@ impl WebGLPaintThread {
         }
     }
 
-    fn send_native_surface(&self, _: Sender<NativeSurface>) {
-        // FIXME(ecoal95): We need to make a clone of the surface in order to
-        // implement this
-        unimplemented!()
-    }
-
     #[allow(unsafe_code)]
     fn recreate(&mut self, size: Size2D<i32>) -> Result<(), &'static str> {
         match self.data {