HTML Imports: No more BlockingDocumentCreation.

Source/core/dom/custom/CustomElementMicrotaskQueue.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 16 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef CustomElementMicrotaskQueue_h
 #define CustomElementMicrotaskQueue_h
 
 #include "core/dom/custom/CustomElementMicrotaskStep.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
+#include "wtf/PassRefPtr.h"
+#include "wtf/RefCounted.h"
+#include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 namespace WebCore {
 
-class CustomElementMicrotaskQueue {
+class CustomElementMicrotaskQueue : public RefCounted<CustomElementMicrotaskQueue> {
     WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskQueue);
 public:
-    CustomElementMicrotaskQueue() { }
+    static PassRefPtr<CustomElementMicrotaskQueue> create() { return adoptRef(new CustomElementMicrotaskQueue()); }
 
-    bool isEmpty() { return m_queue.isEmpty(); }
+
+    bool isEmpty() const { return m_queue.isEmpty(); }
     void enqueue(PassOwnPtr<CustomElementMicrotaskStep>);
 
     typedef CustomElementMicrotaskStep::Result Result;
     Result dispatch();
 
 private:
+    CustomElementMicrotaskQueue() { }
+
     Vector<OwnPtr<CustomElementMicrotaskStep> > m_queue;
 };
 
 }
 
 #endif // CustomElementMicrotaskQueue_h