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:
- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy --faster` does not report any errors
- [ ] These changes fix #__ (github issue number if applicable).

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- [ ] There are tests for these changes OR
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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, 1 insertions, 3 deletions

diff --git a/components/layout/query.rs b/components/layout/query.rs
index 6e49b397e8d..162a7642724 100644
--- a/components/layout/query.rs
+++ b/components/layout/query.rs
@@ -15,7 +15,6 @@ use fragment::{Fragment, FragmentBorderBoxIterator, SpecificFragmentInfo};
 use gfx::display_list::OpaqueNode;
 use gfx_traits::{LayerId};
 use layout_thread::LayoutThreadData;
-use msg::constellation_msg::ConstellationChan;
 use opaque_node::OpaqueNodeMethods;
 use script::layout_interface::{ContentBoxResponse, NodeOverflowResponse, ContentBoxesResponse, NodeGeometryResponse};
 use script::layout_interface::{HitTestResponse, LayoutRPC, OffsetParentResponse, NodeLayerIdResponse};
@@ -79,8 +78,7 @@ impl LayoutRPC for LayoutRPCImpl {
                 None => Cursor::DefaultCursor,
                 Some(dim) => dim.pointing.unwrap(),
             };
-            let ConstellationChan(ref constellation_chan) = rw_data.constellation_chan;
-            constellation_chan.send(ConstellationMsg::SetCursor(cursor)).unwrap();
+            rw_data.constellation_chan.send(ConstellationMsg::SetCursor(cursor)).unwrap();
         }
         HitTestResponse {
             node_address: result.map(|dim| dim.node.to_untrusted_node_address()),