Remove the lifetime hack in ImageLoader where it keeps its assoc element alive

third_party/WebKit/Source/core/html/HTMLInputElement.h

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 12 matching lines @@
  */
 
 #ifndef HTMLInputElement_h
 #define HTMLInputElement_h
 
 #include "base/gtest_prod_util.h"
 #include "core/CoreExport.h"
 #include "core/html/TextControlElement.h"
 #include "core/html/forms/StepRange.h"
 #include "platform/FileChooser.h"
+#include "platform/bindings/ActiveScriptWrappable.h"
 
 namespace blink {
 
 class AXObject;
 class DragData;
 class ExceptionState;
 class FileList;
 class HTMLDataListElement;
 class HTMLImageLoader;
 class InputType;
 class InputTypeView;
 class KURL;
 class ListAttributeTargetObserver;
 class RadioButtonGroupScope;
 struct DateTimeChooserParameters;
 
-class CORE_EXPORT HTMLInputElement : public TextControlElement {
+class CORE_EXPORT HTMLInputElement
+    : public TextControlElement,
+      public ActiveScriptWrappable<HTMLInputElement> {
   DEFINE_WRAPPERTYPEINFO();
+  USING_GARBAGE_COLLECTED_MIXIN(HTMLInputElement);
 
  public:
   static HTMLInputElement* Create(Document&, bool created_by_parser);
   ~HTMLInputElement() override;
   DECLARE_VIRTUAL_TRACE();
 
+  bool HasPendingActivity() const final;
+
   DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitspeechchange);
 
   bool ShouldAutocomplete() const final;
 
   // For ValidityState
   bool HasBadInput() const final;
   bool PatternMismatch() const final;
   bool RangeUnderflow() const final;
   bool RangeOverflow() const final;
   bool StepMismatch() const final;
@@ skipping 360 matching lines @@
   // element lives on.
   Member<HTMLImageLoader> image_loader_;
   Member<ListAttributeTargetObserver> list_attribute_target_observer_;
 
   FRIEND_TEST_ALL_PREFIXES(HTMLInputElementTest, RadioKeyDownDCHECKFailure);
 };
 
 }  // namespace blink
 
 #endif  // HTMLInputElement_h