Fix RTL scroll bars being misrendered on Android.

Source/web/ScrollbarGroup.cpp

 /*
  * Copyright (C) 2011 Google 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 247 matching lines @@
 bool ScrollbarGroup::scrollbarsCanBeActive() const
 {
     return true;
 }
 
 bool ScrollbarGroup::userInputScrollable(ScrollbarOrientation orientation) const
 {
     return orientation == HorizontalScrollbar ? horizontalScrollbar() : verticalScrollbar();
 }
 
+bool ScrollbarGroup::shouldPlaceVerticalScrollbarOnLeft() const
+{
+    return false;

[jamesr, 2013/09/06 22:46:56]

interesting, i guess we never RTL-flip scrollbars in the pdf plugin

+}
+
 int ScrollbarGroup::pageStep(ScrollbarOrientation orientation) const
 {
     int length;
     if (orientation == VerticalScrollbar) {
         if (!m_verticalScrollbar)
             return 0;
 
         length = m_verticalScrollbar->scrollbar()->height();
     } else {
         if (!m_horizontalScrollbar)
             return 0;
 
         length = m_horizontalScrollbar->scrollbar()->width();
     }
 
     int pageStep = std::max(
         static_cast<int>(static_cast<float>(length) * ScrollableArea::minFractionToStepWhenPaging()),
         length - ScrollableArea::maxOverlapBetweenPages());
 
     return std::max(pageStep, 1);
 }
 
 } // namespace WebKit