Separate the null implementation from rtp_rtcp_defines.h, and follow chromium style guide for virtual functions. BUG=webrtc:163 Review-Url: https://codereview.webrtc.org/2400993002 Cr-Commit-Position: refs/heads/master@{#14738}
Separate the null implementation from rtp_rtcp_defines.h, and follow chromium style guide for virtual functions. BUG=webrtc:163 Review-Url: https://codereview.webrtc.org/2400993002 Cr-Commit-Position: refs/heads/master@{#14738}