Reason for revert: Taking out the VideoFrameBuffer changes which broke downstream. Original issue's description: > Revert of Delete unused and almost unused frame-related methods. (patchset #12 id:220001 of https://codereview.webrtc.org/2065733003/ ) > > Reason for revert: > Breaks downstream applications which inherits webrtc::VideoFrameBuffer and tries to override deleted methods data(), stride() and MutableData(). > > Original issue's description: > > Delete unused and almost unused frame-related methods. > > > > webrtc::VideoFrame::set_video_frame_buffer > > webrtc::VideoFrame::ConvertNativeToI420Frame > > > > cricket::WebRtcVideoFrame::InitToBlack > > > > VideoFrameBuffer::data > > VideoFrameBuffer::stride > > VideoFrameBuffer::MutableData > > > > TBR=tkchin@webrtc.org # Refactoring affecting RTCVideoFrame > > BUG=webrtc:5682 > > > > Committed: https://crrev.com/76270de4bc2dac188f10f805e6e2fb86693ef864 > > Cr-Commit-Position: refs/heads/master@{#13183} > > TBR=perkj@webrtc.org,pbos@webrtc.org,marpan@webrtc.org,tkchin@webrtc.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=webrtc:5682 > > Committed: https://crrev.com/72e735d3867a0fd6ab7e4d0761c7ba5f6c068617 > Cr-Commit-Position: refs/heads/master@{#13184} TBR=perkj@webrtc.org,pbos@webrtc.org,marpan@webrtc.org,tkchin@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:5682 Review-Url: https://codereview.webrtc.org/2076123002 Cr-Commit-Position: refs/heads/master@{#13189}