ffmpeg binaries for chromium

BUG=68910
TEST=playing a compressed wave should fail gracefully

Review URL: http://codereview.chromium.org/6288008

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71801 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -10,7 +10,7 @@ vars = {
   "nacl_revision": "4139",
   "libjingle_revision": "50",
   "libvpx_revision": "65287",
-  "ffmpeg_revision": "70984",
+  "ffmpeg_revision": "71799",
   "skia_revision": "699",
 }