ART: Rename 'final' DCE pass to 'after_bce' am: 4b771a13c9 am: f1a6bd818b am: 41bd9363ac am: ffadb9c42d

Original change: https://android-review.googlesource.com/c/platform/art/+/2229626

Change-Id: I80f0354a97d04f74ca0b8169b1cd78ccf2f7e07b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>