Reland: Made content editables report the caret and text selection by treating them as text controls

Source/modules/accessibility/AXNodeObject.cpp

 /*
 * Copyright (C) 2012, Google 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 502 matching lines @@
     idList.replace('\n', ' ');
     Vector<String> idVector;
     idList.split(' ', idVector);
 
     for (const auto& idName : idVector) {
         if (Element* idElement = scope.getElementById(AtomicString(idName)))
             elements.append(idElement);
     }
 }
 
-// If you call node->hasEditableStyle() since that will return true if an ancestor is editable.
-// This only returns true if this is the element that actually has the contentEditable attribute set.
-bool AXNodeObject::hasContentEditableAttributeSet() const
-{
-    if (!hasAttribute(contenteditableAttr))
-        return false;
-    const AtomicString& contentEditableValue = getAttribute(contenteditableAttr);
-    // Both "true" (case-insensitive) and the empty string count as true.
-    return contentEditableValue.isEmpty() || equalIgnoringCase(contentEditableValue, "true");
-}
-
 bool AXNodeObject::isGenericFocusableElement() const
 {
     if (!canSetFocusAttribute())
         return false;
 
     // If it's a control, it's not generic.
     if (isControl())
         return false;
 
     // If it has an aria role, it's not generic.
@@ skipping 1628 matching lines @@
     float range = maxValueForRange() - minValueForRange();
     float value = valueForRange();
 
     value += range * (percentChange / 100);
     setValue(String::number(value));
 
     axObjectCache()->postNotification(node(), AXObjectCacheImpl::AXValueChanged);
 }
 
 } // namespace blink