tp: switch to using pools for all descriptors am: 907f812bcd am: af37e983e6 am: b1a82645d6 am: 018bd23068
tp: switch to using pools for all descriptors am: 907f812bcd am: af37e983e6 am: b1a82645d6 am: 018bd23068

Original change: https://android-review.googlesource.com/c/platform/external/perfetto/+/1573162

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I10e9ec0dec9a5ca220d57c51f4deb3525281869c

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