Will remove default implementations as well once landed and removed
in Chrome as well.
These two AudioDeviceModule APIs are removed:
int32_t SetWaveOutVolume(uint16_t volumeLeft, uint16_t volumeRight)
int32_t WaveOutVolume(uint16_t* volumeLeft, uint16_t* volumeRight) const
BUG=webrtc:7306
Review-Url: https://codereview.webrtc.org/3006793002
Cr-Commit-Position: refs/heads/master@{#19581}