The new parameter indicates if the output in the AudioFrame is muted. If so, the output samples are not written, but should be interpreted as all zero. A version of AudioCodingModule::PlayoutData10Ms() without the new parameter is maintained while waiting for downstream dependencies to conform. BUG=webrtc:5609 Review-Url: https://codereview.webrtc.org/1976913002 Cr-Commit-Position: refs/heads/master@{#12719}