HTML Imports: Fix race conditions on HTMLImportsChild

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 34 matching lines @@
     WTF_MAKE_NONCOPYABLE(CustomElementMicrotaskQueue);
 public:
     static PassRefPtr<CustomElementMicrotaskQueue> create() { return adoptRef(new CustomElementMicrotaskQueue()); }
 
 
     bool isEmpty() const { return m_queue.isEmpty(); }
     void enqueue(PassOwnPtr<CustomElementMicrotaskStep>);
 
     typedef CustomElementMicrotaskStep::Result Result;
     Result dispatch();
+    bool needsProcessOrStop() const;

[dominicc (has gone to gerrit), 2014/05/12 00:42:18]

What is this? Why do imports leak into this abstraction?

 
 #if !defined(NDEBUG)
     void show(unsigned indent);
 #endif
 private:
     CustomElementMicrotaskQueue() { }
 
     Vector<OwnPtr<CustomElementMicrotaskStep> > m_queue;
 };
 
 }
 
 #endif // CustomElementMicrotaskQueue_h