Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/vp8/common/systemdependent.h

Index: third_party/libvpx/source/libvpx/vp8/common/systemdependent.h
diff --git a/third_party/libvpx/source/libvpx/vp8/common/systemdependent.h b/third_party/libvpx/source/libvpx/vp8/common/systemdependent.h
new file mode 100644
index 0000000000000000000000000000000000000000..3d44e37cf24964551dc675dd4cad8ef8e1013c58
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/vp8/common/systemdependent.h
@@ -0,0 +1,27 @@
+/*
+ *  Copyright (c) 2010 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.
+ */
+
+#ifndef VP8_COMMON_SYSTEMDEPENDENT_H_
+#define VP8_COMMON_SYSTEMDEPENDENT_H_
+
+#include "vpx_config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct VP8Common;
+void vp8_machine_specific_config(struct VP8Common *);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // VP8_COMMON_SYSTEMDEPENDENT_H_