ffmpeg delete source folder and use deps to pull in all content....

third_party/ffmpeg/dummy_nolink.cc

Index: third_party/ffmpeg/dummy_nolink.cc
===================================================================
--- third_party/ffmpeg/dummy_nolink.cc	(revision 48686)
+++ third_party/ffmpeg/dummy_nolink.cc	(working copy)
@@ -1,10 +0,0 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Dummy file to make the build system happy for the libffmpegsumo_nolink
-// target.
-
-int main(void) {
-  return 0;
-}