Add Perfetto part of NetworkTraceHandler am: a603ce5b8e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2381737

Change-Id: If61ceb6eb8c69cc042ff1db04a8d79d2e42dd6a0
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>