Update CHANGELOG for v20.1 am: a94219a7a9 am: 135518f660 am: 9279d7d96b am: f20a2c86ef
Update CHANGELOG for v20.1 am: a94219a7a9 am: 135518f660 am: 9279d7d96b am: f20a2c86ef

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1844895

Change-Id: I0f5a4af92a7b1390cfcbb150103736679ca18a69

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto