Revert "Revert "Reduce dirty image pages by improving binning"" am: 80c563b
am: 4694c8d

* commit '4694c8d636cd68df9bd93ad6fc5b0a7d28d252cf':
  Revert "Revert "Reduce dirty image pages by improving binning""

Change-Id: I405f5a57f613180ffb75ce49cb2926a1b6e17d14