Auto merge of #23253 - BartGitHub:refactor-promise-compartment, r=jdm

Refactor promise compartment

<!-- Please describe your changes on the following line: -->
This PR adds a mechanism to verify that certain code is executed inside a ```JSAutoCompartment```, and applies this to the ```Promise::new_in_current_compartment``` constructor.

r? @jdm

---
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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 #23167

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- [x] These changes do not require tests because they do not change existing functionality.

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1 files changed, 11 insertions, 4 deletions

diff --git a/components/script/dom/audiocontext.rs b/components/script/dom/audiocontext.rs
index 52695f8ae54..3147f9bfb0a 100644
--- a/components/script/dom/audiocontext.rs
+++ b/components/script/dom/audiocontext.rs
@@ -2,6 +2,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
+use crate::compartments::{AlreadyInCompartment, InCompartment};
 use crate::dom::baseaudiocontext::{BaseAudioContext, BaseAudioContextOptions};
 use crate::dom::bindings::codegen::Bindings::AudioContextBinding;
 use crate::dom::bindings::codegen::Bindings::AudioContextBinding::{
@@ -107,10 +108,13 @@ impl AudioContextMethods for AudioContext {
     }
 
     // https://webaudio.github.io/web-audio-api/#dom-audiocontext-suspend
-    #[allow(unsafe_code)]
     fn Suspend(&self) -> Rc<Promise> {
         // Step 1.
-        let promise = unsafe { Promise::new_in_current_compartment(&self.global()) };
+        let in_compartment_proof = AlreadyInCompartment::assert(&self.global());
+        let promise = Promise::new_in_current_compartment(
+            &self.global(),
+            InCompartment::Already(&in_compartment_proof),
+        );
 
         // Step 2.
         if self.context.control_thread_state() == ProcessingState::Closed {
@@ -169,10 +173,13 @@ impl AudioContextMethods for AudioContext {
     }
 
     // https://webaudio.github.io/web-audio-api/#dom-audiocontext-close
-    #[allow(unsafe_code)]
     fn Close(&self) -> Rc<Promise> {
         // Step 1.
-        let promise = unsafe { Promise::new_in_current_compartment(&self.global()) };
+        let in_compartment_proof = AlreadyInCompartment::assert(&self.global());
+        let promise = Promise::new_in_current_compartment(
+            &self.global(),
+            InCompartment::Already(&in_compartment_proof),
+        );
 
         // Step 2.
         if self.context.control_thread_state() == ProcessingState::Closed {