Remove rtcp::TransportFeedback::GetStatusVector/GetReceiveDeltas
in favor of GetPacketStatusCount/GetReceivedPackets

BUG=webrtc:5565

Review-Url: https://codereview.webrtc.org/2822153002
Cr-Original-Commit-Position: refs/heads/master@{#17792}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: c1b693c7a84f7b3b9811f639d38fb12cc21cc644
3 files changed