Padding is now used to check for continuity in the packet sequence.

BUG=webrtc:5514

Review-Url: https://codereview.webrtc.org/2051453002
Cr-Original-Commit-Position: refs/heads/master@{#13383}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 9b2ce6be093c24a4b8bca76841e757151701ddad
4 files changed