Merge changes I1d71908a,Id1b41c3b,I07722c81,I31cf7889
authorAngie Chiang <angiebird@google.com>
Wed, 16 Oct 2019 18:32:19 +0000 (18:32 +0000)
committerGerrit Code Review <noreply-gerritcodereview@google.com>
Wed, 16 Oct 2019 18:32:19 +0000 (18:32 +0000)
* changes:
  Localize last_loop_decay_rate
  Make get_zero_mtion_factor avoid using cpi
  Add check_transition_to_still()
  Add compute_arf_boost()


Trivial merge