media/webrtc/audio_processing.gni - chromium/src - Git at Google

 declare_args() {
   # Note: the audio service must be sandboxed for us to use the APM there.
   audio_processing_in_audio_service_supported = is_linux || is_win || is_mac
 }
	declare_args() {
	# Note: the audio service must be sandboxed for us to use the APM there.
	audio_processing_in_audio_service_supported = is_linux \|\| is_win \|\| is_mac
	}