In particular, deleteVertexArrayOES and isVertexArrayOES must check if the passed object has been already deleted or belongs to another context.
WebGL conformance tests are being strengthened to match the new checks in: Tighten OES_vertex_array_object spec and tests https://github.com/KhronosGroup/WebGL/pull/3458
<rdar://problem/97152429>
Committed 252964@main (b2204823ada4): <https://commits.webkit.org/252964@main> Reviewed commits have been landed. Closing PR #2275 and removing active labels.