Revert part of r7561, "Refactor audio conversion functions."

Specifically, revert this part:

  "Remove hacks in AudioBuffer intended to maintain bit-exactness with
   the float path. The conversions etc. are now all natural, and
   instead we enforce close but not bit-exact output between the two

But keep the conversion function rename, since that doesn't seem to be
causing problems.,

Review URL:

git-svn-id: 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed
tree: 6ec88a84e4bf5d9bf456d4536f8a25f3226058fe
  1. audio_processing/
  2. common_video/
  3. rtp_rtcp/
  4. voice_engine/