[JSC] Make ArrayPrototype just an array
Created attachment 452598 [details] Patch
This makes RuntimeArray only DerivedArray. Once RuntimeArray is removed, we can just remove DerivedArray.
Created attachment 452599 [details] Patch
Committed r290194 (247522@trunk): <https://commits.webkit.org/247522@trunk>
<rdar://problem/89178074>
Committed r290210 (?): <https://commits.webkit.org/r290210>
Re-opened since this is blocked by bug 236890
Closing this bug, as the optimization approach seemed to have some drawbacks.