Upadate CHANGELOG for v15.0 am: 8220de2b7f am: 07b2863478 am: 8ff38b330c am: a12ea38de4
Upadate CHANGELOG for v15.0 am: 8220de2b7f am: 07b2863478 am: 8ff38b330c am: a12ea38de4

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1697166

Change-Id: Ibcdf20b0407d6592895a506aa0a6e6e14464eab8

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