Oilpan: Remove guardRef and guardDeref from TreeScope.

Source/core/html/shadow/TextControlInnerElements.cpp

 /*
  * Copyright (C) 2006, 2008, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 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 246 matching lines @@
 inline InputFieldSpeechButtonElement::InputFieldSpeechButtonElement(Document& document)
     : HTMLDivElement(document)
     , m_capturing(false)
     , m_state(Idle)
     , m_listenerId(0)
 {
 }
 
 InputFieldSpeechButtonElement::~InputFieldSpeechButtonElement()
 {
+#if !ENABLE(OILPAN)
+    // With Oilpan, this cleanup is handled with weak processing of the
+    // SpeechInputs.
     SpeechInput* speech = speechInput();
     if (speech && m_listenerId)  { // Could be null when page is unloading.
         if (m_state != Idle)
             speech->cancelRecognition(m_listenerId);
         speech->unregisterListener(m_listenerId);
     }
+#endif
 }
 
 PassRefPtr<InputFieldSpeechButtonElement> InputFieldSpeechButtonElement::create(Document& document)
 {
     RefPtr<InputFieldSpeechButtonElement> element = adoptRef(new InputFieldSpeechButtonElement(document));
     element->setShadowPseudoId(AtomicString("-webkit-input-speech-button", AtomicString::ConstructFromLiteral));
     element->setAttribute(idAttr, ShadowElementNames::speechButton());
     return element.release();
 }
 
@@ skipping 159 matching lines @@
 }
 
 void InputFieldSpeechButtonElement::stopSpeechInput()
 {
     if (m_state == Recording)
         speechInput()->stopRecording(m_listenerId);
 }
 #endif // ENABLE(INPUT_SPEECH)
 
 }