Auto merge of #25694 - kunalmohan:24891-Constellation, r=Manishearth

Remove dependency of constellation on canvas

move `ConstellationCanvasMsg` to canvas_traits and start canvas paint thread
to components/servo. This, however, does not remove dependency for conditional
compilation options.

https://github.com/servo/servo/blob/5f55cd5d71df9c555fbc24777168396ddd539f28/components/constellation/Cargo.toml#L13-L15

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- [X] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [X] These changes fix #24891  (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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1 files changed, 0 insertions, 14 deletions

diff --git a/components/canvas/lib.rs b/components/canvas/lib.rs
index bce829a04cc..b61e32a63e8 100644
--- a/components/canvas/lib.rs
+++ b/components/canvas/lib.rs
@@ -4,10 +4,6 @@
 
 #![deny(unsafe_code)]
 
-use canvas_traits::canvas::CanvasId;
-use crossbeam_channel::Sender;
-use euclid::default::Size2D;
-
 #[macro_use]
 extern crate bitflags;
 #[macro_use]
@@ -26,13 +22,3 @@ pub mod canvas_paint_thread;
 mod webgl_limits;
 mod webgl_mode;
 pub mod webgl_thread;
-
-pub enum ConstellationCanvasMsg {
-    Create {
-        id_sender: Sender<CanvasId>,
-        size: Size2D<u64>,
-        webrender_sender: webrender_api::RenderApiSender,
-        antialias: bool,
-    },
-    Exit,
-}