HTML Imports: No more BlockingDocumentCreation.

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 CustomElementMicrotaskImportStep;
 class CustomElementMicrotaskStep;
-class HTMLImport;
+class HTMLImportLoader;
 
 class CustomElementMicrotaskDispatcher {
     WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskDispatcher);
 public:
     ~CustomElementMicrotaskDispatcher() { }
 
     static CustomElementMicrotaskDispatcher& instance();
 
-    void enqueue(HTMLImport*, PassOwnPtr<CustomElementMicrotaskStep>);
+    void enqueue(HTMLImportLoader*, PassOwnPtr<CustomElementMicrotaskStep>);
     void enqueue(CustomElementCallbackQueue*);
 
     void importDidFinish(CustomElementMicrotaskImportStep*);
 
     bool elementQueueIsEmpty() { return m_elements.isEmpty(); }
 
 private:
     CustomElementMicrotaskDispatcher();
 
     void ensureMicrotaskScheduled();
 
     static void dispatch();
     void doDispatch();
 
     bool m_hasScheduledMicrotask;
     enum {
         Quiescent,
         Resolving,
         DispatchingCallbacks
     } m_phase;
 
-    CustomElementMicrotaskQueue m_resolutionAndImports;
+    RefPtr<CustomElementMicrotaskQueue> m_resolutionAndImports;
     Vector<CustomElementCallbackQueue*> m_elements;
 };
 
 }
 
 #endif // CustomElementMicrotaskDispatcher_h