Move libvpx from DEPS to src

third_party/libvpx/source/libvpx/ivfdec.h

Index: third_party/libvpx/source/libvpx/ivfdec.h
diff --git a/third_party/libvpx/source/libvpx/ivfdec.h b/third_party/libvpx/source/libvpx/ivfdec.h
new file mode 100644
index 0000000000000000000000000000000000000000..dd29cc6174b73d579ee3c4e15e372e29d73cc9a6
--- /dev/null
+++ b/third_party/libvpx/source/libvpx/ivfdec.h
@@ -0,0 +1,28 @@
+/*
+ *  Copyright (c) 2013 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 IVFDEC_H_
+#define IVFDEC_H_
+
+#include "./tools_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int file_is_ivf(struct VpxInputContext *input);
+
+int ivf_read_frame(FILE *infile, uint8_t **buffer,
+                   size_t *bytes_read, size_t *buffer_size);
+
+#ifdef __cplusplus
+}  /* extern "C" */
+#endif
+
+#endif  // IVFDEC_H_