Roll src/third_party/ffmpeg/ e02fc00c5..1b9f48f54 (136 commits)

https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/e02fc00c5da4..1b9f48f54205

$ git log e02fc00c5..1b9f48f54 --date=short --no-merges --format='%ad %ae %s'
2019-04-23 xhwang Revert "Update patches/README for downstream revert"
2019-04-23 xhwang Reland "lavf/oggparsevorbis: Fix change the case of metadata keys issue"
2019-04-23 xhwang Update patches/README for downstream revert
2019-04-23 xhwang Revert "lavf/oggparsevorbis: Fix change the case of metadata keys issue"
2019-04-23 xhwang Chromium patches file and GN Configuration
(...)
2019-03-26 matthew.w.fearnley libavcodec/zmbv: use PTRDIFF_SPECIFIER for `src - c->decomp_buf`.
2019-04-02 jamrial avcodec/opus: make redundancy_buf 32 byte aligned
2019-03-21 kjeyapal avformat/dashenc: Add support for Global SIDX
2019-03-24 kjeyapal avformat/movenc: Fix skip_trailer when global_sidx is enabled
2019-03-27 lq avformat/hls: make different warning message between open url and parse playlist

Created with:
  roll-dep src/third_party/ffmpeg

Also fix AudioVideoMetadataExtractorTest expected tags. Update the tag
names to be exactly the same as they appear in the file. See Bug 955606.

Bug: 950554,955606
Change-Id: I9635e4b0a7867d8a1d2a09346e61760216415129
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1580460
Reviewed-by: Dan Sanders <sandersd@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#653674}
2 files changed