Andrew MacDonald b444b3f0ff Redirect logs to stderr in audioproc_f.
Notably, this displays logs from the AGC.

Also add a "time per chunk" field to the perf output.

R=aluebs@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/56509004

Cr-Commit-Position: refs/heads/master@{#9302}
2015-05-28 00:26:12 +00:00
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