Reland 176261: Fix for select PopupMenuList appearance in rtl mode with overlay-scrollbar enabled.

Source/platform/scroll/FramelessScrollView.cpp

 /*
  * Copyright (c) 2008, 2009, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 62 matching lines @@
 }
 
 HostWindow* FramelessScrollView::hostWindow() const
 {
     return const_cast<FramelessScrollViewClient*>(m_client);
 }
 
 IntRect FramelessScrollView::windowClipRect(IncludeScrollbarsInRect scrollbarInclusion) const
 {
     IntRect clipRect = visibleContentRect(scrollbarInclusion);
-    if (shouldPlaceVerticalScrollbarOnLeft() && verticalScrollbar())
+    if (shouldPlaceVerticalScrollbarOnLeft() && verticalScrollbar() && !verticalScrollbar()->isOverlayScrollbar())
         clipRect.move(verticalScrollbar()->width(), 0);
     return contentsToWindow(clipRect);
 }
 
 void FramelessScrollView::paintContents(GraphicsContext*, const IntRect&)
 {
 }
 
 void FramelessScrollView::contentsResized()
 {
 }
 
 void FramelessScrollView::scrollbarExistenceDidChange()
 {
 }
 
 } // namespace WebCore