[WebGPU] Flesh out WebGPURenderPassDescriptor to match the WebGPU IDL
Created attachment 356122 [details] Patch
<rdar://problem/46322451>
Created attachment 356134 [details] Patch
Comment on attachment 356134 [details] Patch Clearing flags on attachment: 356134 Committed r238741: <https://trac.webkit.org/changeset/238741>
All reviewed patches have been landed. Closing bug.