Auto merge of #11270 - servo:ConstellationChan, r=asajeffrey

Remove ConstellationChan.

Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data:
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- [x] `./mach test-tidy --faster` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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It's a pointless abstraction that propagates the obsolete chan terminology,
swaps the order in which the sender and receiver are returned, and hides a
source of panics.

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1 files changed, 3 insertions, 3 deletions

diff --git a/components/layout_traits/lib.rs b/components/layout_traits/lib.rs
index efc24f33fc3..0b12676b0db 100644
--- a/components/layout_traits/lib.rs
+++ b/components/layout_traits/lib.rs
@@ -26,7 +26,7 @@ extern crate webrender_traits;
 use gfx::font_cache_thread::FontCacheThread;
 use gfx::paint_thread::LayoutToPaintMsg;
 use ipc_channel::ipc::{IpcReceiver, IpcSender};
-use msg::constellation_msg::{ConstellationChan, PanicMsg, PipelineId, PipelineNamespaceId, PipelineIndex};
+use msg::constellation_msg::{PanicMsg, PipelineId, PipelineNamespaceId, PipelineIndex};
 use net_traits::image_cache_thread::ImageCacheThread;
 use profile_traits::{mem, time};
 use script_traits::LayoutMsg as ConstellationMsg;
@@ -48,8 +48,8 @@ pub trait LayoutThreadFactory {
               is_iframe: bool,
               chan: OpaqueScriptLayoutChannel,
               pipeline_port: IpcReceiver<LayoutControlMsg>,
-              constellation_chan: ConstellationChan<ConstellationMsg>,
-              panic_chan: ConstellationChan<PanicMsg>,
+              constellation_chan: IpcSender<ConstellationMsg>,
+              panic_chan: IpcSender<PanicMsg>,
               script_chan: IpcSender<ConstellationControlMsg>,
               layout_to_paint_chan: OptionalIpcSender<LayoutToPaintMsg>,
               image_cache_thread: ImageCacheThread,