Reason for revert: Fixing rendering issues in AppRTCMobile Original issue's description: > Revert of Add Metal video view in AppRTCMobile and metal availability macro. (patchset #5 id:80001 of https://codereview.webrtc.org/2722583002/ ) > > Reason for revert: > Breaks AppRTCMobile > > Original issue's description: > > Add Metal video view in AppRTCMobile and Metal availability macro. > > > > - The RTC_SUPPORTS_METAL macro allows consumers to gracefully handle compilation for different archs that are not supporting Metal. > > > > BUG=webrtc:7079 > > > > Review-Url: https://codereview.webrtc.org/2722583002 > > Cr-Commit-Position: refs/heads/master@{#17004} > > Committed:154a7bb877> > TBR=magjed@webrtc.org,tkchin@webrtc.org,denicija@webrtc.org > # Not skipping CQ checks because original CL landed more than 1 days ago. > BUG=webrtc:7079 > > Review-Url: https://codereview.webrtc.org/2739793003 > Cr-Commit-Position: refs/heads/master@{#17119} > Committed:cbbd8c76e8TBR=magjed@webrtc.org,tkchin@webrtc.org,denicija@webrtc.org # Skipping CQ checks because original CL landed less than 1 days ago. NOPRESUBMIT=true NOTREECHECKS=true NOTRY=true BUG=webrtc:7079 Review-Url: https://codereview.webrtc.org/2742603003 Cr-Commit-Position: refs/heads/master@{#17139}