Migrate content/common/gpu/media code to media/gpu

content/common/gpu/media/v4l2.sig

Index: content/common/gpu/media/v4l2.sig
diff --git a/content/common/gpu/media/v4l2.sig b/content/common/gpu/media/v4l2.sig
deleted file mode 100644
index 4269fb48d592d5700119757cfcabb9d61c42b565..0000000000000000000000000000000000000000
--- a/content/common/gpu/media/v4l2.sig
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright 2014 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.
-
-//------------------------------------------------
-// Functions from libv4l2 used in chromium code.
-//------------------------------------------------
-LIBV4L_PUBLIC int v4l2_close(int fd);
-LIBV4L_PUBLIC int v4l2_ioctl(int fd, unsigned long int request, ...);
-LIBV4L_PUBLIC int v4l2_fd_open(int fd, int v4l2_flags);