This will allow caching the results of applying a filter to an ImageBuffer in GPU Process. We should be able to use the result if the Filter did not change. We should be also able to clear some of the result FilterImages if an member in FilterEffect was changed.
<rdar://problem/85426641>
Pull request: https://github.com/WebKit/WebKit/pull/13432
Pull request: https://github.com/WebKit/WebKit/pull/13814
Committed 264087@main (b686ba471d7a): <https://commits.webkit.org/264087@main> Reviewed commits have been landed. Closing PR #13814 and removing active labels.