roll ffmpeg to 234251/0889dce

DEPS

 # This file is automatically processed to create .DEPS.git which is the file
 # that gclient uses under git.
 #
 # See http://code.google.com/p/chromium/wiki/UsingGit
 #
 # To test manually, run:
 #   python tools/deps2git/deps2git.py -o .DEPS.git
 #   gclient runhooks
 # DO NOT CHECK IN CHANGES TO .DEPS.git. It will be automatically updated by
 # a bot when you modify this one.
@@ skipping 21 matching lines @@
 
   # TODO(rouslan): Get security approval when including more of the code.
   "libaddressinput_revision": "146",
 
   "libphonenumber_revision": "621",
   "libvpx_revision": "232686",
   "lss_revision": "24",
 
   # These two FFmpeg variables must be updated together.  One is used for SVN
   # checkouts and the other for Git checkouts.
-  "ffmpeg_revision": "233439",
-  "ffmpeg_hash": "8f24a147ed76f6220bd812113a733ac90a4f421f",
+  "ffmpeg_revision": "234251",
+  "ffmpeg_hash": "0889dced5e40025c2ed0efd8e9e5e46e59d39c22",
 
   "sfntly_revision": "228",
   "lighttpd_revision": "33737",
   "skia_revision": "12182",
   "skia_hash": "f3db546a4bf1717126a7ba4dd47ece077a6e76f7",
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and V8 without interference from each other.
   "v8_revision": "17517",
   # Three lines of non-changing comments so that
@@ skipping 612 matching lines @@
     "pattern": ".",
     "action": ["python", "src/build/gyp_chromium"],
   },
   {
     # Check for landmines (reasons to clobber the build).
     "name": "landmines",
     "pattern": ".",
     "action": ["python", "src/build/landmines.py"],
   },
 ]