Auto merge of #24250 - imiklos:webglsync, r=jdm

Initial implementation of WebGLSync

This patch adds initial support for [WebGLSync](https://www.khronos.org/registry/webgl/specs/latest/2.0/#3.7.14).

Note:
There is no test for the isSync, deleteSync and waitSync functions in the `conformance2/sync/sync-webgl-specific.html`.

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- [X] `./mach test-tidy` does not report any errors

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1 files changed, 3 insertions, 1 deletions

diff --git a/components/script/dom/bindings/trace.rs b/components/script/dom/bindings/trace.rs
index 8fb272199ab..95bad8b4c4e 100644
--- a/components/script/dom/bindings/trace.rs
+++ b/components/script/dom/bindings/trace.rs
@@ -45,12 +45,13 @@ use canvas_traits::canvas::{
     CanvasGradientStop, CanvasId, LinearGradientStyle, RadialGradientStyle,
 };
 use canvas_traits::canvas::{CompositionOrBlending, LineCapStyle, LineJoinStyle, RepetitionStyle};
+use canvas_traits::webgl::WebGLVertexArrayId;
 use canvas_traits::webgl::{ActiveAttribInfo, ActiveUniformInfo, GlType, TexDataType, TexFormat};
 use canvas_traits::webgl::{GLFormats, GLLimits, WebGLQueryId};
 use canvas_traits::webgl::{WebGLBufferId, WebGLChan, WebGLContextShareMode, WebGLError};
 use canvas_traits::webgl::{WebGLFramebufferId, WebGLMsgSender, WebGLPipeline, WebGLProgramId};
 use canvas_traits::webgl::{WebGLReceiver, WebGLRenderbufferId, WebGLSLVersion, WebGLSender};
-use canvas_traits::webgl::{WebGLShaderId, WebGLTextureId, WebGLVersion, WebGLVertexArrayId};
+use canvas_traits::webgl::{WebGLShaderId, WebGLSyncId, WebGLTextureId, WebGLVersion};
 use crossbeam_channel::{Receiver, Sender};
 use cssparser::RGBA;
 use devtools_traits::{CSSError, TimelineMarkerType, WorkerId};
@@ -480,6 +481,7 @@ unsafe_no_jsmanaged_fields!(WebGLProgramId);
 unsafe_no_jsmanaged_fields!(WebGLQueryId);
 unsafe_no_jsmanaged_fields!(WebGLRenderbufferId);
 unsafe_no_jsmanaged_fields!(WebGLShaderId);
+unsafe_no_jsmanaged_fields!(WebGLSyncId);
 unsafe_no_jsmanaged_fields!(WebGLTextureId);
 unsafe_no_jsmanaged_fields!(WebGLVertexArrayId);
 unsafe_no_jsmanaged_fields!(WebGLVersion);