Port h264_decoder from Chromium

Slight modifications

file: src/media/gpu/h264_decoder.*
                    accerlerated_video_decoder.h
commit head: 738b1539bfb4411bbc7e1ca915c325804f1e39e0

Bug: 32691050
Test: mmm external/v4l2_codec2
Change-Id: I4399c843f882a641c4a63d8b751f58065ce7e9cc
4 files changed
tree: 6f8ef9228fedcd5494a550e008456523a0aa761e
  1. vda/
  2. Android.mk