Merge changes Iba55937d,Ib5d82bde,Id0c921bd am: d1be2a3483
am: 205ec13ed3

* commit '205ec13ed357d263a38d6b16d0cd6f7b099c1fb0':
  Revert "Revert "Revert "Temporarily disable dex cache array emptyness DCHECK"""
  Revert "Revert "Hold dex caches live in class table""
  Revert "Hold dex caches live in class table"

Change-Id: I872032add0d362383b39188940cfbab7abfd50d6