ref: 337e8015c9deaf8ab7e8d0c3c132160a77dd1590
parent: 14a12be8fd5f9ee40b87afe39401c9abb3c04006
author: hkuang <hkuang@google.com>
date: Mon Jul 7 10:52:19 EDT 2014
Move vp9_thread.* to common. Prepare for frame parallel decoding, the reference count buffers need to be protected by mutex. Move vp9_thread.* to common folder so that those buffers could use cross-platform mutex from vp9_thread.*. Change-Id: I541277cf15eefed6641555944f67f4a0bcdc8154