First step to move common accessibility code out of content.

content/common/ax_node_impl.cc

+// Copyright (c) 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 "content/common/ax_node_impl.h"
+
+#include "content/common/ax_tree_impl.h"
+
+namespace content {
+
+AXNodeImpl::AXNodeImpl()
+    : index_in_parent_(0),
+      parent_(NULL),
+      tree_(NULL) {
+}
+
+AXNodeImpl::~AXNodeImpl() {
+  fprintf(stderr, "Deleting node %p\n", this); fflush(stderr);

[aboxhall, 2013/11/11 18:20:35]

I assume this isn't meant to be checked in?

[dmazzoni, 2013/11/12 00:03:04]

Done.

+}
+
+int32 AXNodeImpl::GetId() const {
+  return data_.id;
+}
+
+AXNode* AXNodeImpl::GetParent() const {
+  return parent_;
+}
+
+int AXNodeImpl::GetChildCount() const {
+  return static_cast<int>(children_.size());
+}
+
+AXNode* AXNodeImpl::ChildAtIndex(int index) const {
+  return children_[index];
+}
+
+const AXNodeData& AXNodeImpl::data() const {
+  return data_;
+}
+
+void AXNodeImpl::Init(
+    AXTreeImpl* tree, AXNodeImpl* parent, int32 id, int32 index_in_parent) {
+  tree_ = tree;
+  parent_ = parent;
+  data_.id = id;
+  index_in_parent_ = index_in_parent;
+}
+
+void AXNodeImpl::SetData(const AXNodeData& src) {
+  data_ = src;
+}
+
+void AXNodeImpl::UpdateIndexInParent(int index_in_parent) {
+  index_in_parent_ = index_in_parent;
+}
+
+void AXNodeImpl::DetachTree(std::vector<AXNodeImpl*>* nodes) {
+  nodes->push_back(this);
+  for (size_t i = 0; i < children_.size(); ++i)
+    children_[i]->DetachTree(nodes);
+  children_.clear();
+  parent_ = NULL;
+}
+
+void AXNodeImpl::SwapChildren(std::vector<AXNodeImpl*>& children) {
+  children.swap(children_);
+}
+
+void AXNodeImpl::Destroy() {
+  for (std::vector<AXNodeImpl*>::iterator iter = children_.begin();
+       iter != children_.end();
+       ++iter) {
+    (*iter)->Destroy();
+  }
+  children_.clear();
+  tree_->NodeWasDestroyed(this);
+}
+
+}  // namespace content