Merge changes I53a231cc,I9cc63969,I40b25182,I888b930d,I4399c843, ...

* changes:
  Port vp9_picture and vp9_decoder from Chromium
  Port vp9_bool_decoder and vp9_parser from Chromium
  Port vp8_picture and vp8_decoder from Chromium
  Port vp8_bool_decoder and vp8_parser from Chromium
  Port h264_decoder from Chromium
  Port h264_dpb from Chromium
  Port h264_parser from Chromium
tree: 2f18fd2676e2ae543963defb4bc02c34da68ae91
  1. vda/
  2. Android.mk
  3. MODULE_LICENSE_BSD
  4. NOTICE