[WIP] Adding support for <iframe>s to slimming paint.

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 2140 matching lines @@
         // FIXME: GraphicsLayers need a way to split for RenderRegions.
         LayerPaintingInfo paintingInfo(paintInfo.renderLayer, dirtyRect, PaintBehaviorNormal, paintInfo.renderLayer->subpixelAccumulation());
         LayerPainter(*paintInfo.renderLayer).paintLayerContents(context, paintingInfo, paintLayerFlags);
 
         if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
 
 #ifndef NDEBUG
             context->fillRect(dirtyRect, Color(0xFF, 0, 0));
 #endif
 
-            if (RenderView* view = paintInfo.renderLayer->renderer()->view()) {
-                const PaintList& paintList = view->viewDisplayList().paintList();
+            if (paintInfo.renderLayer->renderer()->view()) {
+                const PaintList& paintList = ViewDisplayList::fromRenderLayer(paintInfo.renderLayer).paintList();
                 for (PaintList::const_iterator it = paintList.begin(); it != paintList.end(); ++it)
                     (*it)->replay(context);
             }
         }
 
         if (paintInfo.renderLayer->containsDirtyOverlayScrollbars())
             LayerPainter(*paintInfo.renderLayer).paintLayerContents(context, paintingInfo, paintLayerFlags | PaintLayerPaintingOverlayScrollbars);
     } else {
         ASSERT(compositor()->layerSquashingEnabled());
         LayerPaintingInfo paintingInfo(paintInfo.renderLayer, dirtyRect, PaintBehaviorNormal, paintInfo.renderLayer->subpixelAccumulation());
@@ skipping 220 matching lines @@
     } else if (graphicsLayer == m_scrollingBlockSelectionLayer.get()) {
         name = "Scrolling Block Selection Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink