This will allow caching the SVGFilter in GPU Process and will allow referencing it in DisplayList items by its RenderingResourceIdentifier. To do that RenderingResource has to not be a RefCounted. SVGFilter inherits FilterFunction which is a RefCounted. NativeImage, Gradient, DecomposeGlyphs and SVGFilter have to handle the ref-counted separate from RenderingResource.
<rdar://problem/108900138>
Pull request: https://github.com/WebKit/WebKit/pull/13446
Committed 263820@main (9a8998b85a0a): <https://commits.webkit.org/263820@main> Reviewed commits have been landed. Closing PR #13446 and removing active labels.