The test program audioproc_f does not call the stream_analog_level method. This should be done do 1) Ensure that proper log output is produced when reproducing a call. 2) Ensure that this method is properly tested. 3) Ensure that the correct side-effects are triggered (this method is not const). BUG=webrtc:6564 Review-Url: https://codereview.webrtc.org/2449043008 Cr-Commit-Position: refs/heads/master@{#14817}