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

third_party/WebKit/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.
@@ skipping 119 matching lines @@
 }
 
 DEFINE_TRACE(HTMLInputElement) {
   visitor->Trace(input_type_);
   visitor->Trace(input_type_view_);
   visitor->Trace(list_attribute_target_observer_);
   visitor->Trace(image_loader_);
   TextControlElement::Trace(visitor);
 }
 
+bool HTMLInputElement::HasPendingActivity() const {
+  return ImageLoader() && ImageLoader()->HasPendingActivity();
+}
+
 HTMLImageLoader& HTMLInputElement::EnsureImageLoader() {
   if (!image_loader_)
     image_loader_ = HTMLImageLoader::Create(this);
   return *image_loader_;
 }
 
 void HTMLInputElement::DidAddUserAgentShadowRoot(ShadowRoot&) {
   input_type_view_->CreateShadowSubtree();
 }
 
@@ skipping 1748 matching lines @@
 
 bool HTMLInputElement::HasFallbackContent() const {
   return input_type_view_->HasFallbackContent();
 }
 
 void HTMLInputElement::SetFilesFromPaths(const Vector<String>& paths) {
   return input_type_->SetFilesFromPaths(paths);
 }
 
 }  // namespace blink