$ google-chrome-stable --headless --disable-gpu --disable-dev-shm-usage --dump-dom https://domains.google.com/checkip
[1224/004108.222580:WARNING:bluez_dbus_manager.cc(247)] Floss manager not present, cannot set Floss enable/disable.
[1224/004108.242047:WARNING:sandbox_linux.cc(380)] InitializeSandbox() called with multiple threads in process gpu-process.
<html><head></head><body>35.229.216.43</body></html>
--single-processにすると警告がでません
$ google-chrome-stable --headless --single-process --disable-gpu --disable-dev-shm-usage --dump-dom https://domains.google.com/checkip
[1224/004248.774261:WARNING:audio_manager_linux.cc(60)] Falling back to ALSA for audio output. PulseAudio is not available or could not be initialized.
[1224/004248.777145:WARNING:bluez_dbus_manager.cc(247)] Floss manager not present, cannot set Floss enable/disable.
<html><head></head><body>35.229.216.43</body></html>
参照