tree 794dda4790070972f97c9196101fb3b26719a794
parent eb885026ed3233d7025658135da6a40751cc2830
author Winson Chung <winsonc@google.com> 1588313032 -0700
committer Winson Chung <winsonc@google.com> 1588313032 -0700

Account for various launcher states when setting back button alpha

- Previously we only check for the flag which is always true in the
  normal launcher state, so if the animation starts, we could end up
  writing the back alpha value without accounting for window focus or
  any other states that launcher is in that affects back button
  visibility

Bug: 155129739
Test: Open -1 article and hit back
Change-Id: I42d27a192b23f394f8565a6893ce092603e31654