Reason for revert: Fails 64-bit windows builds, it turns out I missed some of the needed int/size_t casts. Example https://build.chromium.org/p/client.webrtc/waterfall?builder=Win64%20Release Hope our windows try bots get back in working shape soon. Original issue's description: > Update test code to use I420Buffer when writing pixel data. > > VideoFrameBuffer and VideoFrame will become immutable. > > BUG=webrtc:5921 > R=magjed@webrtc.org, phoglund@webrtc.org > > Committed: https://crrev.com/280ad1514e44bf6717e5871526dd4632f759eb3d > Cr-Commit-Position: refs/heads/master@{#14249} TBR=phoglund@webrtc.org,palmkvist@webrtc.org,magjed@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:5921 Review-Url: https://codereview.webrtc.org/2342123003 Cr-Commit-Position: refs/heads/master@{#14251}