Revert of Use Shadow DOM to display fallback content for images

Source/core/html/forms/InputTypeView.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) 2009, 2010, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
@@ skipping 214 matching lines @@
 AXObject* InputTypeView::popupRootAXObject()
 {
     return 0;
 }
 
 void ClickHandlingState::trace(Visitor* visitor)
 {
     visitor->trace(checkedRadioButton);
 }
 
-void InputTypeView::ensureFallbackContent()
-{
-}
-
-void InputTypeView::ensurePrimaryContent()
-{
-}
-
 } // namespace blink