ANDROID: trace/events: add gpu trace events

Includes subsequent fix:

  Jamie Gennis <jgennis@google.com>:
  trace/events: fix gpu event timestamp formatting

Signed-off-by: Jamie Gennis <jgennis@google.com>

Bug: 8494101
Patchset: trace-gpu

Signed-off-by: Mattias Nissler <mnissler@google.com>
Change-Id: I4b850544588cad0c034fd47ecbae7c6dc5c4ff5d
4 files changed