Add sparse accessibility attribute interface to Blink

third_party/WebKit/Source/modules/accessibility/AXLayoutObject.cpp

 /*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 1219 matching lines @@
 
   return AXNodeObject::textAlternative(recursive, inAriaLabelledByTraversal,
                                        visited, nameFrom, relatedObjects,
                                        nameSources);
 }
 
 //
 // ARIA attributes.
 //
 
-void AXLayoutObject::ariaFlowToElements(AXObjectVector& flowTo) const {
-  accessibilityChildrenFromAttribute(aria_flowtoAttr, flowTo);
-}
-
-void AXLayoutObject::ariaControlsElements(AXObjectVector& controls) const {
-  accessibilityChildrenFromAttribute(aria_controlsAttr, controls);
-}
-
 void AXLayoutObject::ariaOwnsElements(AXObjectVector& owns) const {
   accessibilityChildrenFromAttribute(aria_ownsAttr, owns);
 }
 
 void AXLayoutObject::ariaDescribedbyElements(
     AXObjectVector& describedby) const {
   accessibilityChildrenFromAttribute(aria_describedbyAttr, describedby);
 }
 
 void AXLayoutObject::ariaLabelledbyElements(AXObjectVector& labelledby) const {
@@ skipping 1231 matching lines @@
 
 bool AXLayoutObject::elementAttributeValue(
     const QualifiedName& attributeName) const {
   if (!m_layoutObject)
     return false;
 
   return equalIgnoringCase(getAttribute(attributeName), "true");
 }
 
 }  // namespace blink