Auto merge of #21325 - gterzian:crossbeam_integration, r=SimonSapin,jdm

Replace mpsc with crossbeam-channel

Follow up on https://github.com/servo/servo/pull/19515

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Selecting over multiple channels in `std::sync::mpsc` is not stable and likely never will be:

https://github.com/rust-lang/rust/issues/27800#issuecomment-260136777
> It seems the only thing keeping `mpsc_select` around is Servo.

crossbeam-channel is designed specifically to replace `std::sync::mpsc` and fix many of its shortcomings:
https://github.com/stjepang/rfcs-crossbeam/blob/channel/text/2017-11-09-channel.md

This is to be landed together with https://github.com/servo/ipc-channel/pull/183.

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1 files changed, 1 insertions, 1 deletions

diff --git a/components/net/fetch/methods.rs b/components/net/fetch/methods.rs
index 2ed528e17fb..931a6e778e7 100644
--- a/components/net/fetch/methods.rs
+++ b/components/net/fetch/methods.rs
@@ -21,6 +21,7 @@ use net_traits::{FetchTaskTarget, NetworkError, ReferrerPolicy};
 use net_traits::request::{CredentialsMode, Destination, Referrer, Request, RequestMode};
 use net_traits::request::{ResponseTainting, Origin, Window};
 use net_traits::response::{Response, ResponseBody, ResponseType};
+use servo_channel::{channel, Sender, Receiver};
 use servo_url::ServoUrl;
 use std::borrow::Cow;
 use std::fmt;
@@ -30,7 +31,6 @@ use std::mem;
 use std::str;
 use std::sync::{Arc, Mutex};
 use std::sync::atomic::Ordering;
-use std::sync::mpsc::{Sender, Receiver, channel};
 use std::thread;
 use subresource_integrity::is_response_integrity_valid;