Delete sky/engine/core/dom/custom

sky/engine/core/dom/custom/CustomElementSyncMicrotaskQueue.cpp

-// 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.
-
-#include "sky/engine/config.h"
-#include "sky/engine/core/dom/custom/CustomElementSyncMicrotaskQueue.h"
-
-namespace blink {
-
-void CustomElementSyncMicrotaskQueue::enqueue(PassOwnPtr<CustomElementMicrotaskStep> step)
-{
-    m_queue.append(step);
-}
-
-void CustomElementSyncMicrotaskQueue::doDispatch()
-{
-    unsigned i;
-
-    for (i = 0; i < m_queue.size(); ++i) {
-        if (CustomElementMicrotaskStep::Processing == m_queue[i]->process())
-            break;
-    }
-
-    m_queue.remove(0, i);
-}
-
-} // namespace blink