Rename all existing custom element classes as V0

third_party/WebKit/Source/core/dom/custom/CustomElementMicrotaskQueueBase.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 CustomElementMicrotaskQueueBase_h
-#define CustomElementMicrotaskQueueBase_h
-
-#include "core/dom/custom/CustomElementMicrotaskStep.h"
-#include "platform/heap/Handle.h"
-#include "wtf/Vector.h"
-
-namespace blink {
-
-class CustomElementMicrotaskQueueBase : public GarbageCollectedFinalized<CustomElementMicrotaskQueueBase> {
-    WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskQueueBase);
-public:
-    virtual ~CustomElementMicrotaskQueueBase() { }
-
-    bool isEmpty() const { return m_queue.isEmpty(); }
-    void dispatch();
-
-    DECLARE_TRACE();
-
-#if !defined(NDEBUG)
-    void show(unsigned indent);
-#endif
-
-protected:
-    CustomElementMicrotaskQueueBase() : m_inDispatch(false) { }
-    virtual void doDispatch() = 0;
-
-    HeapVector<Member<CustomElementMicrotaskStep>> m_queue;
-    bool m_inDispatch;
-};
-
-} // namespace blink
-
-#endif // CustomElementMicrotaskQueueBase_h