Revert of Refactor content/renderer/accessibility to use AXTreeSerializer.

content/renderer/accessibility/accessibility_node_serializer.h

Index: content/renderer/accessibility/accessibility_node_serializer.h
diff --git a/content/renderer/accessibility/accessibility_node_serializer.h b/content/renderer/accessibility/accessibility_node_serializer.h
new file mode 100644
index 0000000000000000000000000000000000000000..5ddde216bcab7661f9a135db3b5638e6c89c0dbd
--- /dev/null
+++ b/content/renderer/accessibility/accessibility_node_serializer.h
@@ -0,0 +1,23 @@
+// Copyright (c) 2012 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 CONTENT_RENDERER_ACCESSIBILITY_ACCESSIBILITY_NODE_SERIALIZER_H_
+#define CONTENT_RENDERER_ACCESSIBILITY_ACCESSIBILITY_NODE_SERIALIZER_H_
+
+#include "third_party/WebKit/public/web/WebAXObject.h"
+#include "ui/accessibility/ax_node_data.h"
+
+namespace content {
+
+void SerializeAccessibilityNode(
+    const blink::WebAXObject& src,
+    ui::AXNodeData* dst);
+
+bool ShouldIncludeChildNode(
+    const blink::WebAXObject& parent,
+    const blink::WebAXObject& child);
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_ACCESSIBILITY_ACCESSIBILITY_NODE_SERIALIZER_H_