Auto merge of #23844 - saschanaz:tojson, r=Manishearth

Support default toJSON in WebIDL

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Ported related lines from gecko.

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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 #22781

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- [x] There are tests for these changes

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1 files changed, 0 insertions, 19 deletions

diff --git a/components/script/dom/rtcsessiondescription.rs b/components/script/dom/rtcsessiondescription.rs
index 9aa46f56060..0ef79a321c6 100644
--- a/components/script/dom/rtcsessiondescription.rs
+++ b/components/script/dom/rtcsessiondescription.rs
@@ -14,12 +14,7 @@ use crate::dom::bindings::root::DomRoot;
 use crate::dom::bindings::str::DOMString;
 use crate::dom::globalscope::GlobalScope;
 use crate::dom::window::Window;
-use crate::script_runtime::JSContext;
 use dom_struct::dom_struct;
-use js::conversions::ToJSValConvertible;
-use js::jsapi::JSObject;
-use js::jsval::UndefinedValue;
-use std::ptr::NonNull;
 
 #[dom_struct]
 pub struct RTCSessionDescription {
@@ -71,18 +66,4 @@ impl RTCSessionDescriptionMethods for RTCSessionDescription {
     fn Sdp(&self) -> DOMString {
         self.sdp.clone()
     }
-
-    #[allow(unsafe_code)]
-    /// https://w3c.github.io/webrtc-pc/#dom-rtcsessiondescription-tojson
-    fn ToJSON(&self, cx: JSContext) -> NonNull<JSObject> {
-        let init = RTCSessionDescriptionInit {
-            type_: self.ty,
-            sdp: self.sdp.clone(),
-        };
-        unsafe {
-            rooted!(in(*cx) let mut jsval = UndefinedValue());
-            init.to_jsval(*cx, jsval.handle_mut());
-            NonNull::new(jsval.to_object()).unwrap()
-        }
-    }
 }