Move audio files from //content/rendenrer/media to .../audio

This CL moves the audio-specific files from //content/renderer/media
to //content/renderer/media/audio.

No new code, just moving files.

$ mkdir audio
$ git mv audio_* audio
$ git mv mock_audio_* audio
$ git mv mojo_audio_* audio
$ tools/git/mass-rename.py

NOPRESUBMIT=true

Bug: 739232
Change-Id: Ifadc4b5c0b2b4518405112d47614832684b8b7a8
Reviewed-on: https://chromium-review.googlesource.com/1036824
Commit-Queue: Amos Lim <[email protected]>
Reviewed-by: Guido Urdaneta <[email protected]>
Reviewed-by: Bill Budge <[email protected]>
Reviewed-by: Henrik Grunell <[email protected]>
Cr-Commit-Position: refs/heads/master@{#565560}
47 files changed