tree bdd614ef3e7ce151ae4e87d943c4a72d45c28306
parent 5df4a7a9dcb79093cf678506487a28fd20d6cfe4
author Lalit Maganti <lalitm@google.com> 1591790801 +0100
committer Lalit Maganti <lalitm@google.com> 1591790801 +0100

metrics: add surfaceflinger metric and derived events

This CL adds tracking of missed frames (by considering the
PrevFrameMissed event from surface flinger) and exposes them as a
top-level derived event track.

Change-Id: I696a1d1090940b284d36695d4d68f87b69fcca78