New tool for printing basic packet information from an RTC event log to stdout.

BUG=webrtc:7118

Review-Url: https://codereview.webrtc.org/2673403002
Cr-Original-Commit-Position: refs/heads/master@{#16488}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: d4ed7f59e4866d812cffa89a10feefabe1733bb2
2 files changed