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diff --git a/extern/draco/draco/src/draco/metadata/metadata_decoder.h b/extern/draco/draco/src/draco/metadata/metadata_decoder.h
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+++ b/extern/draco/draco/src/draco/metadata/metadata_decoder.h
@@ -0,0 +1,42 @@
+// Copyright 2017 The Draco Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+#ifndef DRACO_METADATA_METADATA_DECODER_H_
+#define DRACO_METADATA_METADATA_DECODER_H_
+
+#include "draco/core/decoder_buffer.h"
+#include "draco/metadata/geometry_metadata.h"
+#include "draco/metadata/metadata.h"
+
+namespace draco {
+
+// Class for decoding the metadata.
+class MetadataDecoder {
+ public:
+  MetadataDecoder();
+  bool DecodeMetadata(DecoderBuffer *in_buffer, Metadata *metadata);
+  bool DecodeGeometryMetadata(DecoderBuffer *in_buffer,
+                              GeometryMetadata *metadata);
+
+ private:
+  bool DecodeMetadata(Metadata *metadata);
+  bool DecodeEntries(Metadata *metadata);
+  bool DecodeEntry(Metadata *metadata);
+  bool DecodeName(std::string *name);
+
+  DecoderBuffer *buffer_;
+};
+}  // namespace draco
+
+#endif  // DRACO_METADATA_METADATA_DECODER_H_