Revert "Oilpan: Support the HTML parser thread in oilpan"

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 14 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/html/parser/HTMLParserThread.h"
 
 #include "platform/Task.h"
-#include "platform/TaskSynchronizer.h"
 #include "public/platform/Platform.h"
 #include "wtf/PassOwnPtr.h"
 
 namespace WebCore {
 
 static HTMLParserThread* s_sharedThread = 0;
 
 HTMLParserThread::HTMLParserThread()
 {
 }
 
 HTMLParserThread::~HTMLParserThread()
 {
 }
 
 void HTMLParserThread::init()
 {
     ASSERT(!s_sharedThread);
     s_sharedThread = new HTMLParserThread;
 }
 
-void HTMLParserThread::setupHTMLParserThread()
-{
-    m_pendingGCRunner = adoptPtr(new PendingGCRunner);
-    m_messageLoopInterruptor = adoptPtr(new MessageLoopInterruptor(&platformThread()));
-    platformThread().addTaskObserver(m_pendingGCRunner.get());
-    ThreadState::attach();
-    ThreadState::current()->addInterruptor(m_messageLoopInterruptor.get());
-}
-
 void HTMLParserThread::shutdown()
 {
     ASSERT(s_sharedThread);
-    TaskSynchronizer taskSynchronizer;
-    s_sharedThread->postTask(WTF::bind(&HTMLParserThread::cleanupHTMLParserThread, s_sharedThread, &taskSynchronizer));
-    taskSynchronizer.waitForTaskCompletion();
     delete s_sharedThread;
     s_sharedThread = 0;
 }
 
-void HTMLParserThread::cleanupHTMLParserThread(TaskSynchronizer* taskSynchronizer)
-{
-    ThreadState::current()->removeInterruptor(m_messageLoopInterruptor.get());
-    ThreadState::detach();
-    platformThread().removeTaskObserver(m_pendingGCRunner.get());
-    taskSynchronizer->taskCompleted();
-    m_pendingGCRunner = nullptr;
-    m_messageLoopInterruptor = nullptr;
-}
-
 HTMLParserThread* HTMLParserThread::shared()
 {
     return s_sharedThread;
 }
 
 blink::WebThread& HTMLParserThread::platformThread()
 {
-    if (!m_thread) {
+    if (!m_thread)
         m_thread = adoptPtr(blink::Platform::current()->createThread("HTMLParserThread"));
-        postTask(WTF::bind(&HTMLParserThread::setupHTMLParserThread, this));
-    }
     return *m_thread;
 }
 
 void HTMLParserThread::postTask(const Closure& closure)
 {
     platformThread().postTask(new Task(closure));
 }
 
 } // namespace WebCore