getContextAttributes for OffscreenCanvasRenderingContext2D

[ccameron-chromium]

Request for Mozilla Position on an Emerging Web Specification

• Specification title: getContextAttributes for OffscreenCanvasRenderingContext2D
• Specification or proposal URL:
• Explainer URL (if available): https://github.com/ccameron-chromium/ColorWeb-CG/blob/canvas_cleanup/canvas2d_settings.md
• Proposal author(s): @ccameron-chromium
• Caniuse.com URL (optional):
• Bugzilla URL (optional): https://bugzilla.mozilla.org/show_bug.cgi?id=1940414
• Mozillians who can provide input (optional):
• WebKit standards-position: getContextAttributes for OffscreenCanvasRenderingContext2D WebKit/standards-positions#445

Other information

This is based on identifying a number of accidental difference between CanvasRenderingContext2D and OffscreenCanvasRenderingContext2D. See:
whatwg/html#10872