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diff --git a/extern/draco/draco/src/draco/compression/attributes/sequential_attribute_decoders_controller.h b/extern/draco/draco/src/draco/compression/attributes/sequential_attribute_decoders_controller.h
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+// Copyright 2016 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_COMPRESSION_ATTRIBUTES_SEQUENTIAL_ATTRIBUTE_DECODERS_CONTROLLER_H_
+#define DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_ATTRIBUTE_DECODERS_CONTROLLER_H_
+
+#include "draco/compression/attributes/attributes_decoder.h"
+#include "draco/compression/attributes/points_sequencer.h"
+#include "draco/compression/attributes/sequential_attribute_decoder.h"
+
+namespace draco {
+
+// A basic implementation of an attribute decoder that decodes data encoded by
+// the SequentialAttributeEncodersController class. The
+// SequentialAttributeDecodersController creates a single
+// AttributeIndexedValuesDecoder for each of the decoded attribute, where the
+// type of the values decoder is determined by the unique identifier that was
+// encoded by the encoder.
+class SequentialAttributeDecodersController : public AttributesDecoder {
+ public:
+  explicit SequentialAttributeDecodersController(
+      std::unique_ptr<PointsSequencer> sequencer);
+
+  bool DecodeAttributesDecoderData(DecoderBuffer *buffer) override;
+  bool DecodeAttributes(DecoderBuffer *buffer) override;
+  const PointAttribute *GetPortableAttribute(
+      int32_t point_attribute_id) override {
+    const int32_t loc_id = GetLocalIdForPointAttribute(point_attribute_id);
+    if (loc_id < 0) {
+      return nullptr;
+    }
+    return sequential_decoders_[loc_id]->GetPortableAttribute();
+  }
+
+ protected:
+  bool DecodePortableAttributes(DecoderBuffer *in_buffer) override;
+  bool DecodeDataNeededByPortableTransforms(DecoderBuffer *in_buffer) override;
+  bool TransformAttributesToOriginalFormat() override;
+  virtual std::unique_ptr<SequentialAttributeDecoder> CreateSequentialDecoder(
+      uint8_t decoder_type);
+
+ private:
+  std::vector<std::unique_ptr<SequentialAttributeDecoder>> sequential_decoders_;
+  std::vector<PointIndex> point_ids_;
+  std::unique_ptr<PointsSequencer> sequencer_;
+};
+
+}  // namespace draco
+
+#endif  // DRACO_COMPRESSION_ATTRIBUTES_SEQUENTIAL_ATTRIBUTE_DECODERS_CONTROLLER_H_