Get rid of the one remaining extra call to LayerPainter::beginTransparencyLayers.

Source/core/rendering/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 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 2096 matching lines @@
         // RenderLayer::paintLayer assumes that the caller clips to the passed rect. Squashed layers need to do this clipping in software,
         // since there is no graphics layer to clip them precisely. Furthermore, in some cases we squash layers that need clipping in software
         // from clipping ancestors (see CompositedLayerMapping::localClipRectForSquashedLayer()).
         context->save();
         dirtyRect.intersect(paintInfo.localClipRectForSquashedLayer);
         context->clip(dirtyRect);
         LayerPainter(*paintInfo.renderLayer).paintLayer(context, paintingInfo, paintLayerFlags);
         context->restore();
     }
 
-    ASSERT(!paintInfo.renderLayer->usedTransparency());
-
     // Manually restore the context to its original state by applying the opposite translation.
     context->translate(offset.width(), offset.height());
 }
 
 static void paintScrollbar(Scrollbar* scrollbar, GraphicsContext& context, const IntRect& clip)
 {
     if (!scrollbar)
         return;
 
     context.save();
@@ skipping 197 matching lines @@
     } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) {
         name = "Scrolling Block Selection Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink