This updates test code that tests interleaved audio frames to use
some of the same properties and types as AudioFrame (rather than copy).
The CL also moves code from audio_processing_unittest.cc that modifies
the buffer owned by Int16FrameData, into Int16FrameData.
Bug: none
Change-Id: Iab37227deb302bf4fc832633d312262e5249caad
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/355960
Reviewed-by: Per Åhgren <peah@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#43424}
5f163fcaa0