Separate Custom Element resolution and upgrade/createdCallback.

Source/core/dom/custom/CustomElementMicrotaskDispatcher.h

+// Copyright 2014 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 CustomElementMicrotaskDispatcher_h
+#define CustomElementMicrotaskDispatcher_h
+
+#include "core/dom/custom/CustomElementMicrotaskQueue.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/PassOwnPtr.h"
+#include "wtf/Vector.h"
+
+namespace WebCore {
+
+class CustomElementCallbackQueue;
+class CustomElementMicrotaskStep;
+class HTMLImport;
+
+class CustomElementMicrotaskDispatcher {
+    WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskDispatcher);
+public:
+    CustomElementMicrotaskDispatcher() : m_phase(Quiescent) { }
+    ~CustomElementMicrotaskDispatcher() { }
+
+    void enqueue(HTMLImport*, PassOwnPtr<CustomElementMicrotaskStep>);
+    void enqueue(CustomElementCallbackQueue*);
+    bool dispatch();
+    bool elementQueueIsEmpty() { return m_elements.isEmpty(); }
+
+private:
+    enum {
+        Quiescent,
+        Resolving,
+        DispatchingCallbacks
+    } m_phase;
+
+    CustomElementMicrotaskQueue m_resolutionAndImports;
+    Vector<CustomElementCallbackQueue*> m_elements;
+};
+
+}
+
+#endif // CustomElementMicrotaskDispatcher_h