No tracing of nop traceable fields (#29926)

* Add `no_trace` option to JSTraceable derive

* NoTrace wrapper

* Port some types to no_trace schematics

* Fixing my unsafe mistakes (not tracing traceables)

* Add docs & safety guards for no_trace

Safety guards (trait shenanigans) guarantees safety usage of `no_trace`

* Port canvas_traits to no_trace

* Port servo_media to no_trace

* Port net_traits to no_trace

* Port style to no_trace

* Port webgpu to no_trace

* Port script_traits to no_trace

* Port canvas_traits, devtools_traits, embedder_traits, profile_traits to no_trace

* unrooted_must_root lint in seperate file

* Add trace_in_no_trace_lint as script_plugin

* Composable types in must_not_have_traceable

* Introduced HashMapTracedValues wrapper

* `HashMap<NoTrace<K>,V>`->`HashMapTracedValues<K,V>`

* Port rest of servo's types to no_trace

* Port html5ever, euclid, mime and http to no_trace

* Port remaining externals to no_trace

* Port webxr and Arc<Mutex<_>>

* Fix spelling in notrace doc

1 files changed, 2 insertions, 0 deletions

diff --git a/components/script/dom/gpucomputepassencoder.rs b/components/script/dom/gpucomputepassencoder.rs
index f0f4325ae6d..c9b807ae6ac 100644
--- a/components/script/dom/gpucomputepassencoder.rs
+++ b/components/script/dom/gpucomputepassencoder.rs
@@ -22,9 +22,11 @@ use webgpu::{
 pub struct GPUComputePassEncoder {
     reflector_: Reflector,
     #[ignore_malloc_size_of = "defined in webgpu"]
+    #[no_trace]
     channel: WebGPU,
     label: DomRefCell<Option<USVString>>,
     #[ignore_malloc_size_of = "defined in wgpu-core"]
+    #[no_trace]
     compute_pass: DomRefCell<Option<ComputePass>>,
     command_encoder: Dom<GPUCommandEncoder>,
 }