Implement callback reactions for Custom Elements V1

third_party/WebKit/Source/core/dom/custom/CustomElementConnectedCallbackReaction.h

Index: third_party/WebKit/Source/core/dom/custom/CustomElementConnectedCallbackReaction.h
diff --git a/third_party/WebKit/Source/core/dom/custom/CustomElementConnectedCallbackReaction.h b/third_party/WebKit/Source/core/dom/custom/CustomElementConnectedCallbackReaction.h
new file mode 100644
index 0000000000000000000000000000000000000000..e3eb6e44d994adec08584db16eae760dc9d8592e
--- /dev/null
+++ b/third_party/WebKit/Source/core/dom/custom/CustomElementConnectedCallbackReaction.h
@@ -0,0 +1,27 @@
+// Copyright 2016 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 CustomElementConnectedCallbackReaction_h
+#define CustomElementConnectedCallbackReaction_h
+
+#include "core/CoreExport.h"
+#include "core/dom/custom/CustomElementReaction.h"
+#include "platform/heap/Handle.h"
+#include "wtf/Noncopyable.h"
+
+namespace blink {
+
+class CORE_EXPORT CustomElementConnectedCallbackReaction final
+    : public CustomElementReaction {
+    WTF_MAKE_NONCOPYABLE(CustomElementConnectedCallbackReaction);
+public:
+    CustomElementConnectedCallbackReaction(CustomElementDefinition*);
+
+private:
+    void invoke(Element*) override;
+};
+
+} // namespace blink
+
+#endif // CustomElementConnectedCallbackReaction_h