Rename HTMLInputElement::imageLoader() to ensureImageLoader()

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 222 matching lines @@
     void beginEditing();
     void endEditing();
 
     static Vector<FileChooserFileInfo> filesFromFileInputFormControlState(const FormControlState&);
 
     virtual bool matchesReadOnlyPseudoClass() const override final;
     virtual bool matchesReadWritePseudoClass() const override final;
     virtual void setRangeText(const String& replacement, ExceptionState&) override final;
     virtual void setRangeText(const String& replacement, unsigned start, unsigned end, const String& selectionMode, ExceptionState&) override final;
 
-    bool hasImageLoader() const { return m_imageLoader; }
-    HTMLImageLoader* imageLoader();
+    HTMLImageLoader* imageLoader() const { return m_imageLoader.get(); }
+    HTMLImageLoader& ensureImageLoader();
 
     bool setupDateTimeChooserParameters(DateTimeChooserParameters&);
 
     bool supportsInputModeAttribute() const;
 
     void setShouldRevealPassword(bool value);
     bool shouldRevealPassword() const { return m_shouldRevealPassword; }
     AXObject* popupRootAXObject();
     virtual void didNotifySubtreeInsertionsToDocument() override;
 
@@ skipping 124 matching lines @@
     // The ImageLoader must be owned by this element because the loader code assumes
     // that it lives as long as its owning element lives. If we move the loader into
     // the ImageInput object we may delete the loader while this element lives on.
     OwnPtrWillBeMember<HTMLImageLoader> m_imageLoader;
     OwnPtrWillBeMember<ListAttributeTargetObserver> m_listAttributeTargetObserver;
 };
 
 } // namespace blink
 
 #endif // HTMLInputElement_h