Fix RTL scroll bars being misrendered on Android.

Source/core/platform/Scrollbar.cpp

 /*
  * Copyright (C) 2004, 2006, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 103 matching lines @@
 bool Scrollbar::isScrollableAreaActive() const
 {
     return m_scrollableArea && m_scrollableArea->isActive();
 }
 
 bool Scrollbar::isScrollViewScrollbar() const
 {
     return parent() && parent()->isFrameView() && toFrameView(parent())->isScrollViewScrollbar(this);
 }
 
-TextDirection Scrollbar::textDirection() const
+bool Scrollbar::isLeftSideVerticalScrollbar() const
 {
     if (m_orientation == VerticalScrollbar && m_scrollableArea)
-        return m_scrollableArea->textDirection();
-    return LTR;
+        return m_scrollableArea->shouldPlaceVerticalScrollbarOnLeft();
+    return false;
 }
 
 void Scrollbar::offsetDidChange()
 {
     ASSERT(m_scrollableArea);
 
     float position = scrollableAreaCurrentPos();
     if (position == m_currentPos)
         return;
 
@@ skipping 456 matching lines @@
     if (!m_scrollableArea)
         return 0;
 
     if (m_orientation == HorizontalScrollbar)
         return m_scrollableArea->scrollPosition().x() - m_scrollableArea->minimumScrollPosition().x();
 
     return m_scrollableArea->scrollPosition().y() - m_scrollableArea->minimumScrollPosition().y();
 }
 
 } // namespace WebCore