Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/vp8/encoder/arm/dct_arm.c

Index: third_party/libvpx/source/libvpx/vp8/encoder/arm/dct_arm.c
diff --git a/third_party/libvpx/source/libvpx/vp8/encoder/arm/dct_arm.c b/third_party/libvpx/source/libvpx/vp8/encoder/arm/dct_arm.c
new file mode 100644
index 0000000000000000000000000000000000000000..f71300d2c6ca99f135790d6aa66a01536d703229
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/vp8/encoder/arm/dct_arm.c
@@ -0,0 +1,22 @@
+/*
+ *  Copyright (c) 2011 The WebM project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "vpx_config.h"
+#include "vp8_rtcd.h"
+
+#if HAVE_MEDIA
+
+void vp8_short_fdct8x4_armv6(short *input, short *output, int pitch)
+{
+    vp8_short_fdct4x4_armv6(input,   output,    pitch);
+    vp8_short_fdct4x4_armv6(input + 4, output + 16, pitch);
+}
+
+#endif /* HAVE_MEDIA */