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diff --git a/src/utils/parameter_tree.h b/src/utils/parameter_tree.h
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-/*
- * Copyright 2019 The libgav1 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 LIBGAV1_SRC_UTILS_PARAMETER_TREE_H_
-#define LIBGAV1_SRC_UTILS_PARAMETER_TREE_H_
-
-#include <cassert>
-#include <memory>
-
-#include "src/utils/common.h"
-#include "src/utils/compiler_attributes.h"
-#include "src/utils/constants.h"
-#include "src/utils/memory.h"
-#include "src/utils/types.h"
-
-namespace libgav1 {
-
-class ParameterTree : public Allocable {
- public:
-  // Creates a parameter tree to store the parameters of a block of size
-  // |block_size| starting at coordinates |row4x4| and |column4x4|. If |is_leaf|
-  // is set to true, the memory will be allocated for the BlockParameters for
-  // this node. Otherwise, no memory will be allocated. If |is_leaf| is set to
-  // false, |block_size| must be a square block, i.e.,
-  // kBlockWidthPixels[block_size] must be equal to
-  // kBlockHeightPixels[block_size].
-  static std::unique_ptr<ParameterTree> Create(int row4x4, int column4x4,
-                                               BlockSize block_size,
-                                               bool is_leaf = false);
-
-  // Move only (not Copyable).
-  ParameterTree(ParameterTree&& other) = default;
-  ParameterTree& operator=(ParameterTree&& other) = default;
-  ParameterTree(const ParameterTree&) = delete;
-  ParameterTree& operator=(const ParameterTree&) = delete;
-
-  // Set the partition type of the current node to |partition|.
-  // if (partition == kPartitionNone) {
-  //   Memory will be allocated for the BlockParameters for this node.
-  // } else if (partition != kPartitionSplit) {
-  //   The appropriate child nodes will be populated and memory will be
-  //   allocated for the BlockParameters of the children.
-  // } else {
-  //   The appropriate child nodes will be populated but they are considered to
-  //   be hanging, i.e., future calls to SetPartitionType() on the child nodes
-  //   will have to set them or their descendants to a terminal type.
-  // }
-  // This function must be called only once per node.
-  LIBGAV1_MUST_USE_RESULT bool SetPartitionType(Partition partition);
-
-  // Basic getters.
-  int row4x4() const { return row4x4_; }
-  int column4x4() const { return column4x4_; }
-  BlockSize block_size() const { return block_size_; }
-  Partition partition() const { return partition_; }
-  ParameterTree* children(int index) const {
-    assert(index < 4);
-    return children_[index].get();
-  }
-  // Returns the BlockParameters object of the current node if one exists.
-  // Otherwise returns nullptr. This function will return a valid
-  // BlockParameters object only for leaf nodes.
-  BlockParameters* parameters() const { return parameters_.get(); }
-
- private:
-  ParameterTree(int row4x4, int column4x4, BlockSize block_size)
-      : row4x4_(row4x4), column4x4_(column4x4), block_size_(block_size) {}
-
-  Partition partition_ = kPartitionNone;
-  std::unique_ptr<BlockParameters> parameters_ = nullptr;
-  int row4x4_ = -1;
-  int column4x4_ = -1;
-  BlockSize block_size_ = kBlockInvalid;
-  bool partition_type_set_ = false;
-
-  // Child values are defined as follows for various partition types:
-  //  * Horizontal: 0 top partition; 1 bottom partition; 2 nullptr; 3 nullptr;
-  //  * Vertical: 0 left partition; 1 right partition; 2 nullptr; 3 nullptr;
-  //  * Split: 0 top-left partition; 1 top-right partition; 2; bottom-left
-  //    partition; 3 bottom-right partition;
-  //  * HorizontalWithTopSplit: 0 top-left partition; 1 top-right partition; 2
-  //    bottom partition; 3 nullptr;
-  //  * HorizontalWithBottomSplit: 0 top partition; 1 bottom-left partition; 2
-  //    bottom-right partition; 3 nullptr;
-  //  * VerticalWithLeftSplit: 0 top-left partition; 1 bottom-left partition; 2
-  //    right partition; 3 nullptr;
-  //  * VerticalWithRightSplit: 0 left-partition; 1 top-right partition; 2
-  //    bottom-right partition; 3 nullptr;
-  //  * Horizontal4: 0 top partition; 1 second top partition; 2 third top
-  //    partition; 3 bottom partition;
-  //  * Vertical4: 0 left partition; 1 second left partition; 2 third left
-  //    partition; 3 right partition;
-  std::unique_ptr<ParameterTree> children_[4] = {};
-
-  friend class ParameterTreeTest;
-};
-
-}  // namespace libgav1
-
-#endif  // LIBGAV1_SRC_UTILS_PARAMETER_TREE_H_