https://webrtc.googlesource.com/src/+/45b0781a4bd04d182a9ac8b121b911410db6f06d/modules/desktop_capture/win/screen_capturer_win_magnifier.cc
modules/desktop_capture/win/screen_capturer_win_magnifier.cc - src - Git at Google
screen capturermodulesdesktopwinmagnifier