This is needed because the audio processing header references abseil's optional.h. Clean up the declared dependencies while we're at it. Fixes: https://gitlab.freedesktop.org/pulseaudio/webrtc-audio-processing/-/merge_requests/34
This is needed because the audio processing header references abseil's optional.h. Clean up the declared dependencies while we're at it. Fixes: https://gitlab.freedesktop.org/pulseaudio/webrtc-audio-processing/-/merge_requests/34