Add predefined metrics to GAPIT perfetto (#3689)
Add predefined metrics to GAPIT perfetto (#3689)

This change adds predefined metrics to GAPIT perfetto, and
fixes some minor issues.
google/agi,google/gapid,google/gapid,google/gapid,google/agi,google/gapid,google/agi,google/agi,google/gapid,google/agi,google/gapid,google/agi,google/gapid,google/agi,google/agi,google/gapid