maxmorin 88e31a3fd8 Fix warnings, simplify ADM.
This is in preparation for adding a gn target for audio_device_tests.

BUG=webrtc:6170,webrtc:163
NOTRY=True

Review-Url: https://codereview.webrtc.org/2222563002
Cr-Commit-Position: refs/heads/master@{#13768}
2016-08-16 07:56:14 +00:00
..
2016-08-16 07:56:14 +00:00