Roll src/third_party/ffmpeg/ c99db0ab5..1e816bccb (2 commits)

https://chromium.googlesource.com/chromium/third_party/ffmpeg.git/+log/c99db0ab53a4..1e816bccb5ff

$ git log c99db0ab5..1e816bccb --date=short --no-merges --format='%ad %ae %s'
2017-11-16 dalecurtis Re-add MIPS configuration. It's still used after all.
2017-11-16 gordana.cmiljanovic [MIPS] Put mipsel Linux configuration options

Created with:
  roll-dep src/third_party/ffmpeg

Bug: None
Test: None
Tbr: chcunningham
Change-Id: I2cf10050a3abc16f183982b8e16042fb03e463cc
Reviewed-on: https://chromium-review.googlesource.com/776036
Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
Reviewed-by: Dale Curtis <dalecurtis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517500}

DEPS

@@ -330,7 +330,7 @@ deps = {
   },
 
   'src/third_party/ffmpeg':
-    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + 'c99db0ab53a43f09e65caf0b546c8a4b19a36f60',
+    Var('chromium_git') + '/chromium/third_party/ffmpeg.git' + '@' + '1e816bccb5ff0b778ab2765b4fa8b888a121a200',
 
   'src/third_party/findbugs': {
       'url': Var('chromium_git') + '/chromium/deps/findbugs.git' + '@' + '4275d9ac8610db6b1bc9a5e887f97e41b33fac67',