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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1 files changed, 1 insertions, 0 deletions

diff --git a/components/canvas/gl_context.rs b/components/canvas/gl_context.rs
index 018300129b9..886e6dea39a 100644
--- a/components/canvas/gl_context.rs
+++ b/components/canvas/gl_context.rs
@@ -238,6 +238,7 @@ fn map_limits(limits: RawGLLimits) -> GLLimits {
         max_varying_vectors: limits.max_varying_vectors,
         max_vertex_texture_image_units: limits.max_vertex_texture_image_units,
         max_vertex_uniform_vectors: limits.max_vertex_uniform_vectors,
+        max_client_wait_timeout_webgl: std::time::Duration::new(1, 0),
     }
 }