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

Source/modules/accessibility/AXObject.h

 /*
  * Copyright (C) 2008, 2009, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nuanti Ltd.
  *
  * 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.
@@ skipping 391 matching lines @@
     virtual bool isProgressIndicator() const { return false; }
     bool isRadioButton() const { return roleValue() == RadioButtonRole; }
     bool isScrollbar() const { return roleValue() == ScrollBarRole; }
     virtual bool isSlider() const { return false; }
     virtual bool isNativeSlider() const { return false; }
     virtual bool isSpinButton() const { return roleValue() == SpinButtonRole; }
     virtual bool isSpinButtonPart() const { return false; }
     bool isTabItem() const { return roleValue() == TabRole; }
     virtual bool isTableCell() const { return false; }
     virtual bool isTableRow() const { return false; }
+    virtual bool isTextControl() const { return false; }
     virtual bool isTableCol() const { return false; }
-    bool isTextControl() const;
     bool isTree() const { return roleValue() == TreeRole; }
     bool isTreeItem() const { return roleValue() == TreeItemRole; }
     bool isWebArea() const { return roleValue() == WebAreaRole; }
 
     // Check object state.
     virtual bool isChecked() const { return false; }
     virtual bool isClickable() const;
     virtual bool isCollapsed() const { return false; }
     virtual bool isEnabled() const { return false; }
     virtual AccessibilityExpanded isExpanded() const { return ExpandedUndefined; }
@@ skipping 259 matching lines @@
 
     virtual bool computeAccessibilityIsIgnored() const { return true; }
     virtual bool computeHasInheritedPresentationalRole() const { return false; }
 
     // If this object itself scrolls, return its ScrollableArea.
     virtual ScrollableArea* getScrollableAreaIfScrollable() const { return 0; }
     virtual void scrollTo(const IntPoint&) const { }
 
     AccessibilityRole buttonRoleType() const;
 
-    bool allowsTextRanges() const { return isTextControl(); }
     unsigned getLengthForTextRange() const { return text().length(); }
 
     bool m_detached;
 
     mutable AXObject* m_parent;
 
     // The following cached attribute values (the ones starting with m_cached*)
     // are only valid if m_lastModificationCount matches AXObjectCacheImpl::modificationCount().
     mutable int m_lastModificationCount;
     mutable bool m_cachedIsIgnored : 1;
@@ skipping 13 matching lines @@
     static bool includesARIAWidgetRole(const String&);
     static bool hasInteractiveARIAAttribute(const Element&);
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, AXObject, object, object->predicate, object.predicate)
 
 } // namespace blink
 
 #endif // AXObject_h