This enables the bit exactness tests for the audio level controller.
Additionally, some expected test values are updated.
Bug: webrtc:8309
Change-Id: Ia73f2a16aea4b3e926d70d8b4b8e5d5d801833c7
Reviewed-on: https://webrtc-review.googlesource.com/4426
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20102}