When compiling chrome for Caroline using simple chrome flow, it failed with error:
../../ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc:215:33: error: no member named 'msc_bitmask' in 'EvdevInfo_'
  if (EvdevBitIsSet(evdev->info.msc_bitmask, MSC_TIMESTAMP)) {
                    ~~~~~~~~~~~ ^
../../ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc:216:50: error: use of undeclared identifier 'Event_Get_Timestamp'
    hwstate.msc_timestamp = static_cast<stime_t>(Event_Get_Timestamp(evdev)) /
                                                 ^
../../ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc:216:13: error: no member named 'msc_timestamp' in 'HardwareState'; did you mean 'timestamp'?
    hwstate.msc_timestamp = static_cast<stime_t>(Event_Get_Timestamp(evdev)) /
            ^~~~~~~~~~~~~
            timestamp
../../../.cros_cache/chrome-sdk/tarballs/caroline+10448.0.0+sysroot_chromeos-base_chromeos-chrome.tar.xz/usr/include/gestures/gestures.h:169:11: note: 'timestamp' declared here
  stime_t timestamp;  // 64-bit Wall clock time in microseconds (10^-6 s)
          ^
../../ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.cc:219:13: error: no member named 'msc_timestamp' in 'HardwareState'; did you mean 'timestamp'?
    hwstate.msc_timestamp = 0.0;
            ^~~~~~~~~~~~~
            timestamp
../../../.cros_cache/chrome-sdk/tarballs/caroline+10448.0.0+sysroot_chromeos-base_chromeos-chrome.tar.xz/usr/include/gestures/gestures.h:169:11: note: 'timestamp' declared here
  stime_t timestamp;  // 64-bit Wall clock time in microseconds (10^-6 s)
          ^

Suspicious CL: https://chromium-review.googlesource.com/c/chromium/src/+/817979

Verified locally that reverting it fixed the compile.

It hasn't reflected on the PFQ yet. I think it will fail the chrome informational builds very soon. I'll revert CL first.