OnEncodedImage() is going to replace Encoded(), which is deprecated now. The new OnEncodedImage() returns Result struct that contains frame_id, which tells the encoder RTP timestamp for the frame. BUG=chromium:621691 R=niklas.enbom@webrtc.org, sprang@webrtc.org, stefan@webrtc.org Review URL: https://codereview.webrtc.org/2089773002 . Cr-Commit-Position: refs/heads/master@{#13613}