Merge "Hide trace_processor output from user and update help messages" into main am: 61b60e9253

Original change: https://android-review.googlesource.com/c/platform/system/extras/+/3460653

Change-Id: I9b0420845c7f0c38ba631a2acba8aeaef8c42ce9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>