Implement Custom Elements

sky/engine/core/dom/custom2/new_custom_element.h

Index: sky/engine/core/dom/custom2/new_custom_element.h
diff --git a/sky/engine/core/dom/custom2/new_custom_element.h b/sky/engine/core/dom/custom2/new_custom_element.h
new file mode 100644
index 0000000000000000000000000000000000000000..9c3b76c4ff1427dd87de07f859389511808a0f5c
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+++ b/sky/engine/core/dom/custom2/new_custom_element.h
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+// Copyright 2015 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 SKY_ENGINE_CORE_DOM_CUSTOM_NEW_CUSTOM_ELEMENT_H_
+#define SKY_ENGINE_CORE_DOM_CUSTOM_NEW_CUSTOM_ELEMENT_H_
+
+#include "sky/engine/wtf/text/AtomicString.h"
+
+namespace blink {
+class Document;
+class Element;
+
+class NewCustomElement {
+ public:
+  static void AttributeDidChange(Element*, const AtomicString& name, const AtomicString& oldValue, const AtomicString& newValue);
+  static void DidAttach(Element*, Document&);
+  static void DidDetach(Element*, Document&);
+
+ private:
+  NewCustomElement();
+};
+
+}  // namespace blink
+
+#endif  // SKY_ENGINE_CORE_DOM_CUSTOM_NEW_CUSTOM_ELEMENT_H_