Roll src/third_party/ffmpeg/ 38d84d205..3f3ad2ea9 (1 commit).

https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/38d84d205cd8..3f3ad2ea90df

$ git log 38d84d205..3f3ad2ea9 --date=short --no-merges --format='%ad %ae %s'
2017-02-17 wolenetz libopus: decode ambisonics with non-diegetic sources

Created with:
  roll-dep src/third_party/ffmpeg

BUG=693745
[email protected]

Review-Url: https://codereview.chromium.org/2705543004
Cr-Commit-Position: refs/heads/master@{#451494}
1 file changed