It is time.

ui/accessibility/ax_serializable_tree.cc

Index: ui/accessibility/ax_serializable_tree.cc
diff --git a/ui/accessibility/ax_serializable_tree.cc b/ui/accessibility/ax_serializable_tree.cc
deleted file mode 100644
index 750b3b0c2d509f1c27b9561578cbb6ad185798c5..0000000000000000000000000000000000000000
--- a/ui/accessibility/ax_serializable_tree.cc
+++ /dev/null
@@ -1,69 +0,0 @@
-// Copyright 2013 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.
-
-#include "ui/accessibility/ax_serializable_tree.h"
-
-#include "ui/accessibility/ax_node.h"
-
-namespace ui {
-
-// This class is an implementation of the AXTreeSource interface with
-// AXNode as the node type, that just delegates to an AXTree. The purpose
-// of this is so that AXTreeSerializer only needs to work with the
-// AXTreeSource abstraction and doesn't need to actually know about
-// AXTree directly. Another AXTreeSource is used to abstract the Blink
-// accessibility tree.
-class AX_EXPORT AXTreeSourceAdapter : public AXTreeSource<const AXNode*> {
- public:
-  AXTreeSourceAdapter(AXTree* tree) : tree_(tree) {}
-  ~AXTreeSourceAdapter() override {}
-
-  // AXTreeSource implementation.
-  AXNode* GetRoot() const override { return tree_->GetRoot(); }
-
-  AXNode* GetFromId(int32 id) const override { return tree_->GetFromId(id); }
-
-  int32 GetId(const AXNode* node) const override { return node->id(); }
-
-  void GetChildren(const AXNode* node,
-                   std::vector<const AXNode*>* out_children) const override {
-    for (int i = 0; i < node->child_count(); ++i)
-      out_children->push_back(node->ChildAtIndex(i));
-  }
-
-  AXNode* GetParent(const AXNode* node) const override {
-    return node->parent();
-  }
-
-  bool IsValid(const AXNode* node) const override { return node != NULL; }
-
-  bool IsEqual(const AXNode* node1, const AXNode* node2) const override {
-    return node1 == node2;
-  }
-
-  const AXNode* GetNull() const override { return NULL; }
-
-  void SerializeNode(const AXNode* node, AXNodeData* out_data) const override {
-    *out_data = node->data();
-  }
-
- private:
-  AXTree* tree_;
-};
-
-AXSerializableTree::AXSerializableTree()
-    : AXTree() {}
-
-AXSerializableTree::AXSerializableTree(const AXTreeUpdate& initial_state)
-    : AXTree(initial_state) {
-}
-
-AXSerializableTree::~AXSerializableTree() {
-}
-
-AXTreeSource<const AXNode*>* AXSerializableTree::CreateTreeSource() {
-  return new AXTreeSourceAdapter(this);
-}
-
-}  // namespace ui