Revert 42727 - ffmpeg roll chromium binaries

bug=none
test=none


TBR=fbarchard@chromium.org
Review URL: http://codereview.chromium.org/1419001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42773 0039d316-1c4b-4281-b951-d872f2087c98