Add run-time check in EVENT() to disable debug markers To avoid a large performance impact from adding Vulkan debug-util markers for every GLES entrypoint, the EVENT() macro needs a run-time check that avoids constructing a ScopedPerfEventHelper object. Test: angle_perftests -v --local-output --gtest_filter="TracePerfTest.Run/*nba*" Bug: b/170249632 Change-Id: I422111cdf6f6f713800e7ac587e66582bd00359f Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2491009 Commit-Queue: Ian Elliott <ianelliott@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>