Reason for revert: Relanding without changes. Problem with unused flags was fixed in https://codereview.webrtc.org/2998143002/ Original issue's description: > Revert of Stop silently accepting unsupported flags in test binaries (patchset #5 id:150001 of https://codereview.webrtc.org/2968003003/ ) > > Reason for revert: > Causes failures on perf bots > https://luci-milo.appspot.com/buildbot/client.webrtc.perf/Mac%2010.11/3567 > > Original issue's description: > > Stop silently accepting unsupported flags in test binaries > > > > Instead explicitly ignore only the flags we know should be ignored. > > > > BUG=webrtc:7568 > > > > Review-Url: https://codereview.webrtc.org/2968003003 > > Cr-Commit-Position: refs/heads/master@{#19412} > > Committed:a2782f6f5d> > TBR=kjellander@webrtc.org,henrika@webrtc.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=webrtc:7568 > > Review-Url: https://codereview.webrtc.org/3002963002 > Cr-Commit-Position: refs/heads/master@{#19413} > Committed:d64072c598TBR=kjellander@webrtc.org,henrika@webrtc.org # Not skipping CQ checks because original CL landed more than 1 days ago. BUG=webrtc:7568 Review-Url: https://codereview.webrtc.org/2999383002 Cr-Commit-Position: refs/heads/master@{#19455}