Expose scroll containers via accessibility APIs.

Source/modules/accessibility/AXLayoutObject.h

 /*
  * 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 170 matching lines @@
     virtual FrameView* documentFrameView() const override;
     virtual Element* anchorElement() const override;
     virtual Widget* widgetForAttachmentView() const override;
 
     // Selected text.
     virtual PlainTextRange selectedTextRange() const override;
 
     // Modify or take an action on an object.
     virtual void setSelectedTextRange(const PlainTextRange&) override;
     virtual void setValue(const String&) override;
-    virtual void scrollTo(const IntPoint&) const override;
 
     // Notifications that this object may have changed.
     virtual void handleActiveDescendantChanged() override;
     virtual void handleAriaExpandedChanged() override;
     virtual void textChanged() override;
 
     // Text metrics. Most of these should be deprecated, needs major cleanup.
     virtual int index(const VisiblePosition&) const override;
     virtual VisiblePosition visiblePositionForIndex(int) const override;
     virtual void lineBreaks(Vector<int>&) const override;
@@ skipping 26 matching lines @@
     VisibleSelection selection() const;
     int indexForVisiblePosition(const VisiblePosition&) const;
     void accessibilityChildrenFromAttribute(QualifiedName attr, AccessibilityChildrenVector&) const;
 };
 
 DEFINE_AX_OBJECT_TYPE_CASTS(AXLayoutObject, isAXLayoutObject());
 
 } // namespace blink
 
 #endif // AXLayoutObject_h