Revert "Update D8 and R8 to 3.3.15-dev"

This reverts commit d9612c67b6e49d5415281163a5ef33703a79fef5.

Reason for revert: Seems to be triggering failures

Bug: 219483607
Change-Id: I518a9c885212d95f7a94465016939bc841f97878
2 files changed