Auto merge of #21593 - chansuke:format_webvr_traits, r=jdm

Format components webvr_traits #21373

<!-- Please describe your changes on the following line: -->
Format `components/webvr_traits` with `rstfmt` command.

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix part of #21373.
- [x] These changes do not require tests because _____

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components/webvr_traits/lib.rs

@@ -6,7 +6,8 @@
 
 extern crate ipc_channel;
 extern crate msg;
-#[macro_use] extern crate serde;
+#[macro_use]
+extern crate serde;
 pub extern crate rust_webvr_api as webvr;
 
 mod webvr_traits;

components/webvr_traits/webvr_traits.rs

@@ -15,11 +15,20 @@ pub enum WebVRMsg {
     UnregisterContext(PipelineId),
     PollEvents(IpcSender<bool>),
     GetDisplays(IpcSender<WebVRResult<Vec<VRDisplayData>>>),
-    GetFrameData(PipelineId, u32, f64, f64, IpcSender<WebVRResult<VRFrameData>>),
+    GetFrameData(
+        PipelineId,
+        u32,
+        f64,
+        f64,
+        IpcSender<WebVRResult<VRFrameData>>,
+    ),
     ResetPose(PipelineId, u32, IpcSender<WebVRResult<VRDisplayData>>),
     RequestPresent(PipelineId, u32, IpcSender<WebVRResult<()>>),
     ExitPresent(PipelineId, u32, Option<IpcSender<WebVRResult<()>>>),
     CreateCompositor(u32),
-    GetGamepads(Vec<u32>, IpcSender<WebVRResult<Vec<(Option<VRGamepadData>, VRGamepadState)>>>),
+    GetGamepads(
+        Vec<u32>,
+        IpcSender<WebVRResult<Vec<(Option<VRGamepadData>, VRGamepadState)>>>,
+    ),
     Exit,
 }