am 7a64e3a6: DO NOT MERGE Set the cap at alpha to 80% of the total available.

Merge commit '7a64e3a6f3e9f4de9cb097f604187d06268c23be' into gingerbread-plus-aosp

* commit '7a64e3a6f3e9f4de9cb097f604187d06268c23be':
  DO NOT MERGE Set the cap at alpha to 80% of the total available.