First step to move common accessibility code out of content.

ui/accessibility/ax_node.cc

Index: ui/accessibility/ax_node.cc
diff --git a/ui/accessibility/ax_node.cc b/ui/accessibility/ax_node.cc
new file mode 100644
index 0000000000000000000000000000000000000000..ff1f4e4a4f65c53e2dd7089cde834270af411984
--- /dev/null
+++ b/ui/accessibility/ax_node.cc
@@ -0,0 +1,39 @@
+// 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 "ui/accessibility/ax_node.h"
+
+namespace ui {
+
+AXNode::AXNode()
+    : index_in_parent_(0),
+      parent_(NULL) {
+}
+
+AXNode::~AXNode() {
+}
+
+void AXNode::Init(AXNode* parent, int32 id, int32 index_in_parent) {
+  parent_ = parent;
+  data_.id = id;
+  index_in_parent_ = index_in_parent;
+}
+
+void AXNode::SetData(const AXNodeData& src) {
+  data_ = src;
+}
+
+void AXNode::UpdateIndexInParent(int index_in_parent) {
+  index_in_parent_ = index_in_parent;
+}
+
+void AXNode::SwapChildren(std::vector<AXNode*>& children) {
+  children.swap(children_);
+}
+
+void AXNode::Destroy() {
+  delete this;
+}
+
+}  // namespace ui