Document pprof offline symbolization. am: 3b91e66cba
Document pprof offline symbolization.
am: 3b91e66cba

Change-Id: Ie5c44c9267bf205f5a2524f7e557d4cad90a21c1

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