Port vp8_picture and vp8_decoder from Chromium

Slight modifications

file: src/media/gpu/vp8_picture.*
                    vp8_decoder.*
commit head: 60f96676bc512b3a785893bfd03e3ceb4d825be9

Bug: 32691050
Test: mmm external/v4l2_codec2
Change-Id: I40b251824d37f93a9ea15baca9bd910b865a734d
5 files changed
tree: de979c8bdcca87699f4580ebd285bf0d38f8115d
  1. vda/
  2. Android.mk