ChromeOS will use DPI (see crrev.com/c/3322917), but the DesktopAndCursorComposer assumed pixels were used. Test: Manually ensured it works Bug: b/208370410 Change-Id: I5fee50d408fd204273946009e6653d4e60d1e458 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/259502 Reviewed-by: Alexander Cooper <alcooper@chromium.org> Commit-Queue: Jeroen Dhollander <jeroendh@google.com> Cr-Commit-Position: refs/heads/main@{#36597}