Merge rtp::Packet::GetHeader into RtpPacketReceived::GetHeader removing error-prone code where latter shadow former version BUG=None Review-Url: https://codereview.webrtc.org/3012983002 Cr-Commit-Position: refs/heads/master@{#19784}
Merge rtp::Packet::GetHeader into RtpPacketReceived::GetHeader removing error-prone code where latter shadow former version BUG=None Review-Url: https://codereview.webrtc.org/3012983002 Cr-Commit-Position: refs/heads/master@{#19784}