[oilpan] Figure out lifetime of remaining Node raw pointers (Part 2)

Source/core/html/HTMLInputElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
@@ skipping 80 matching lines @@
 #if ENABLE(DATALIST_ELEMENT)
 class ListAttributeTargetObserver : public IdTargetObserver {
     WTF_MAKE_FAST_ALLOCATED;
 public:
     static PassOwnPtr<ListAttributeTargetObserver> create(const AtomicString& id, const Handle<HTMLInputElement>&);
     virtual void idTargetChanged() OVERRIDE;
 
 private:
     ListAttributeTargetObserver(const AtomicString& id, const Handle<HTMLInputElement>&);
 
-    // FIXME(oilpan): Move ListAttributeTargetObserver to the heap and use a Member.
+    // FIXME(oilpan): This should be a strong pointer.

[zerny-chromium, 2013/10/01 10:18:37]

Just to be sure: we want a weak pointer from the registry to the listener and
then we can use a strong pointer from the listener to the element?

[haraken, 2013/10/01 16:46:52]

Yes, updated the comment to clarify that.

     HTMLInputElement* m_element;
 };
 #endif
 
 // FIXME: According to HTML4, the length attribute's value can be arbitrarily
 // large. However, due to https://bugs.webkit.org/show_bug.cgi?id=14536 things
 // get rather sluggish when a text field has a larger number of characters than
 // this, even when just clicking in the text field.
 const int HTMLInputElement::maximumLength = 524288;
 const int defaultSize = 20;
@@ skipping 1786 matching lines @@
     return m_inputType->customStyleForRenderer(document()->styleResolver()->styleForElement(selfHandle()));
 }
 #endif
 
 void HTMLInputElement::accept(Visitor* visitor) const
 {
     HTMLTextFormControlElement::accept(visitor);
 }
 
 } // namespace