Currently, VP9 decoders are registered when a Web page is created in the WebContent process. Instead, VP9 decoders can be registered when PlatformMediaSessionManager is created, which should be a slight performance improvement, since calls into media frameworks will then not be made unconditionally when creating a Web page, but delayed until required.
<rdar://problem/74790242>
Created attachment 421651 [details] Patch
Comment on attachment 421651 [details] Patch Thanks for reviewing!
Committed r273564: <https://commits.webkit.org/r273564> All reviewed patches have been landed. Closing bug and clearing flags on attachment 421651 [details].