Revert 48697 - ffmpeg roll to deps version that contains gyp and source BUG=42238 TEST=none
Revert 48697 - ffmpeg roll to deps version that contains gyp and source
BUG=42238
TEST=none

Review URL: http://codereview.chromium.org/2475001

TBR=fbarchard@chromium.org
Review URL: http://codereview.chromium.org/2447003

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@48702 0039d316-1c4b-4281-b951-d872f2087c98

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