De-templatize ui::AXPosition

ui/accessibility/ax_node_position.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_ACCESSIBILITY_AX_NODE_POSITION_H_
 #define UI_ACCESSIBILITY_AX_NODE_POSITION_H_
 
 #include <stdint.h>
 
 #include <vector>
 
 #include "base/strings/string16.h"
 #include "ui/accessibility/ax_export.h"
 #include "ui/accessibility/ax_node.h"
 #include "ui/accessibility/ax_position.h"
 #include "ui/accessibility/ax_tree.h"
 
 namespace ui {
 
 class AX_EXPORT AXNodePosition : public AXPosition<AXNodePosition, AXNode> {
  public:
   AXNodePosition();
   ~AXNodePosition() override;
 
-  AXPositionInstance Clone() const override;
+  ConcreteInstance CloneConcrete() const override;
 
   base::string16 GetInnerText() const override;
 
   static void SetTreeForTesting(AXTree* tree) { tree_ = tree; }
 
  protected:
   AXNodePosition(const AXNodePosition& other) = default;
   void AnchorChild(int child_index,
                    int* tree_id,
                    int32_t* child_id) const override;
   int AnchorChildCount() const override;
   int AnchorIndexInParent() const override;
   void AnchorParent(int* tree_id, int32_t* parent_id) const override;
   AXNode* GetNodeInTree(int tree_id, int32_t node_id) const override;
   int MaxTextOffset() const override;
   bool IsInLineBreak() const override;
   std::vector<int32_t> GetWordStartOffsets() const override;
   std::vector<int32_t> GetWordEndOffsets() const override;
   int32_t GetNextOnLineID(int32_t node_id) const override;
   int32_t GetPreviousOnLineID(int32_t node_id) const override;
 
  private:
   static AXTree* tree_;
 };
 
 }  // namespace ui
 
 #endif  // UI_ACCESSIBILITY_AX_NODE_POSITION_H_