Roll /hdd2/chrome/src/third_party/ffmpeg/ 9ed334093..9ca66eafa (7 commits)

https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/9ed334093692..9ca66eafaf6f

$ git log 9ed334093..9ca66eafa --date=short --no-merges --format='%ad %ae %s'
2018-02-23 xhwang ffmpeg: Fix memset size on ctts_data in mov_read_trun() (round 2)
2018-02-23 xhwang Revert "ffmpeg: Fix memset size on ctts_data in mov_read_trun()"
2018-02-23 dalecurtis Don't invoke trailing garbage discard for every flush.
2018-02-23 dalecurtis Skip trailing junk data when flushing parser.
2018-01-29 dalecurtis avcodec/mpegaudio_parser: Skip APE tags when parsing mp3 packets.
2018-02-15 dalecurtis Parse and drop gain control data, so that SSR packets decode.
2018-02-15 xhwang ffmpeg: Fix memset size on ctts_data in mov_read_trun()

Created with:
  roll-dep /hdd2/chrome/src/third_party/ffmpeg

BUG=812567,794782

Change-Id: If6e6ce0fea7773d2a431d8ba390b122e094162b3
Reviewed-on: https://chromium-review.googlesource.com/935967Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Commit-Queue: Xiaohan Wang <xhwang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#538983}

DEPS

@@ -356,7 +356,7 @@ deps = {
   },
 
   'src/third_party/ffmpeg':
-    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '9ed334093692f2dc77c4ad8186ddadde584e1e20',
+    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '9ca66eafaf6fbbde11862e1468b365220ca142fd',
 
   'src/third_party/flac':
     Var('chromium_git') + '/chromium/deps/flac.git' + '@' + '7d0f5b3a173ffe98db08057d1f52b7787569e0a6',