servo: Merge #14895 - Added Websocket to RequestMode enum (from dowoncha:request-websocket); r=jdm

Added Websocket to RequestMode enum
---
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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 #14785  (github issue number if applicable).

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because matching the enum should have default control flow.

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Source-Repo: https://github.com/servo/servo
Source-Revision: 8fff2f29d0da97a35bece887506964f5fb4b33d6

servo/components/net/resource_thread.rs

@@ -330,6 +330,7 @@ impl CoreResourceManager {
         let ua = self.user_agent.clone();
         let dc = self.devtools_chan.clone();
         let filemanager = self.filemanager.clone();
+
         thread::Builder::new().name(format!("fetch thread for {}", init.url)).spawn(move || {
             let request = Request::from_init(init);
             // XXXManishearth: Check origin against pipeline id (also ensure that the mode is allowed)