Add a version of RTPSenderVideo::GetSentRtpPacketInfo() that operates over a set of numbers, so as to only grab the lock once. Bug: webrtc:10501 Change-Id: I9453b0cb44dcd6e2ce196390b2c5c9a7dd6d800a Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/132014 Commit-Queue: Elad Alon <eladalon@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Reviewed-by: Erik Språng <sprang@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#27544}