This CL replaces all remaining usage of AudioFrame within APM, with the exception of the AudioProcessing interface. The main changes are within the unittests. Bug: webrtc:5298 Change-Id: I219cdd08f81a8679b28d9dd1359a56837945f3d4 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/170362 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Per Åhgren <peah@webrtc.org> Cr-Commit-Position: refs/heads/master@{#30831}