Add thread affinity and ASSERT() for same-thread restriction to WTF::Function

third_party/WebKit/Source/core/html/parser/HTMLParserThread.cpp

 /*
  * 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 69 matching lines @@
 {
     m_thread->shutdown();
     waitableEvent->signal();
 }
 
 HTMLParserThread* HTMLParserThread::shared()
 {
     return s_sharedThread;
 }
 
-void HTMLParserThread::postTask(PassOwnPtr<Closure> closure)
+void HTMLParserThread::postTask(PassOwnPtr<CrossThreadClosure> closure)
 {
     ASSERT(isMainThread());
     if (!m_thread) {
         m_thread = WebThreadSupportingGC::create("HTMLParserThread");
         postTask(threadSafeBind(&HTMLParserThread::setupHTMLParserThread, AllowCrossThreadAccess(this)));
     }
 
     m_thread->postTask(BLINK_FROM_HERE, closure);
 }
 
 } // namespace blink