Fix RTL scroll bars being misrendered on Android.

Source/core/rendering/RenderLayerScrollableArea.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011, 2012 Apple Inc. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
  *   Randall Jesup <rjesup@wgate.com>
@@ skipping 314 matching lines @@
 IntRect RenderLayerScrollableArea::scrollableAreaBoundingBox() const
 {
     return m_layer->scrollableAreaBoundingBox();
 }
 
 bool RenderLayerScrollableArea::userInputScrollable(ScrollbarOrientation orientation) const
 {
     return m_layer->userInputScrollable(orientation);
 }
 
+bool RenderLayerScrollableArea::shouldPlaceVerticalScrollbarOnLeft() const
+{
+    return m_layer->shouldPlaceVerticalScrollbarOnLeft();
+}
+
 int RenderLayerScrollableArea::pageStep(ScrollbarOrientation orientation) const
 {
     return m_layer->pageStep(orientation);
 }
 
 RenderLayerModelObject* RenderLayerScrollableArea::renderer() const
 {
     // Only RenderBoxes can have a scrollable area, however we allocate an
     // RenderLayerScrollableArea for any renderers (FIXME).
     return m_layer->renderer();
@@ skipping 91 matching lines @@
 
     int maxX = scrollWidth() - box->pixelSnappedClientWidth();
     int maxY = scrollHeight() - box->pixelSnappedClientHeight();
 
     int x = std::max(std::min(scrollOffset.width(), maxX), 0);
     int y = std::max(std::min(scrollOffset.height(), maxY), 0);
     return IntSize(x, y);
 }
 
 } // Namespace WebCore