Use Shadow DOM to display fallback content for images

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 114 matching lines @@
     , m_hasTouchEventHandler(false)
     , m_shouldRevealPassword(false)
     , m_needsToUpdateViewValue(true)
     // |m_inputType| is lazily created when constructed by the parser to avoid
     // constructing unnecessarily a text inputType and its shadow subtree, just
     // to destroy them when the |type| attribute gets set by the parser to
     // something else than 'text'.
     , m_inputType(createdByParser ? nullptr : InputType::createText(*this))
     , m_inputTypeView(m_inputType)
 {
-#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
     setHasCustomStyleCallbacks();
-#endif
 }
 
 PassRefPtrWillBeRawPtr<HTMLInputElement> HTMLInputElement::create(Document& document, HTMLFormElement* form, bool createdByParser)
 {
     RefPtrWillBeRawPtr<HTMLInputElement> inputElement = adoptRefWillBeNoop(new HTMLInputElement(document, form, createdByParser));
     if (!createdByParser)
         inputElement->ensureUserAgentShadowRoot();
     return inputElement.release();
 }
 
@@ skipping 1721 matching lines @@
 bool HTMLInputElement::isInteractiveContent() const
 {
     return m_inputType->isInteractiveContent();
 }
 
 bool HTMLInputElement::supportsAutofocus() const
 {
     return m_inputType->isInteractiveContent();
 }
 
-#if ENABLE(INPUT_MULTIPLE_FIELDS_UI)
 PassRefPtr<RenderStyle> HTMLInputElement::customStyleForRenderer()
 {
     return m_inputTypeView->customStyleForRenderer(originalStyleForRenderer());
 }
-#endif
 
 bool HTMLInputElement::shouldDispatchFormControlChangeEvent(String& oldValue, String& newValue)
 {
     return m_inputType->shouldDispatchFormControlChangeEvent(oldValue, newValue);
 }
 
 void HTMLInputElement::didNotifySubtreeInsertionsToDocument()
 {
     listAttributeTargetChanged();
 }
 
 AXObject* HTMLInputElement::popupRootAXObject()
 {
     return m_inputTypeView->popupRootAXObject();
 }
 
+void HTMLInputElement::ensureFallbackContent()
+{
+    m_inputTypeView->ensureFallbackContent();
+}
+
+void HTMLInputElement::ensurePrimaryContent()
+{
+    m_inputTypeView->ensurePrimaryContent();
+}
+
+bool HTMLInputElement::hasFallbackContent() const
+{
+    return m_inputTypeView->hasFallbackContent();
+}
 } // namespace