Custom Elements: Encapsulates Async and Sync Queues into one class.

Source/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 "config.h"
+#include "core/dom/custom/CustomElementSyncMicrotaskQueue.h"
+
+namespace WebCore {
+
+void CustomElementSyncMicrotaskQueue::enqueue(PassOwnPtrWillBeRawPtr<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 WebCore