Replace various ScrollableArea scroll methods with setScrollPosition

Source/modules/accessibility/AXScrollbar.cpp

 /*
  * Copyright (C) 2010 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 88 matching lines @@
 
 void AXScrollbar::setValue(float value)
 {
     if (!m_scrollbar)
         return;
 
     if (!m_scrollbar->scrollableArea())
         return;
 
     float newValue = value * m_scrollbar->maximum();
-    m_scrollbar->scrollableArea()->scrollToOffsetWithoutAnimation(m_scrollbar->orientation(), newValue);
+
+    // TODO(bokan): This should potentially be a UserScroll.
+    m_scrollbar->scrollableArea()->setScrollPositionSingleAxis(m_scrollbar->orientation(), newValue, ProgrammaticScroll);
 }
 
 } // namespace blink