VKEY_MEDIA_PREV_TRACK  174 ui/events/keycodes/keyboard_codes_posix.h   VKEY_MEDIA_PREV_TRACK = 0xB1,
VKEY_MEDIA_PREV_TRACK  150 ui/events/keycodes/keyboard_codes_win.h   VKEY_MEDIA_PREV_TRACK = VK_MEDIA_PREV_TRACK,