803d97f159
This removes the VideoSendStream::LoadObserver interface and the implementation in WebrtcVideoSendStream and replace it with VideoSinkWants through the VideoSourceInterface. To do that that, some stats for CPU adaptation is moved into VideoSendStream. Also handling of the CVO rtp header extension is moved to VideoSendStreamImpl. BUG=webrtc:5687 TBR=mflodman@webrtc.org Review-Url: https://codereview.webrtc.org/2304363002 Cr-Commit-Position: refs/heads/master@{#14877}