Drop legacy / prefixed WebAudio implementation now that it is disabled in shipping. This will allow us to clean up the code a bit.
Created attachment 428680 [details] Patch
Created attachment 428686 [details] Patch
Created attachment 428695 [details] Patch
Created attachment 428698 [details] Patch
Created attachment 428701 [details] Patch
Committed r277530 (237758@main): <https://commits.webkit.org/237758@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 428701 [details].
<rdar://problem/78045161>