WebKit merge 40668:40722 part 1.

third_party/WebKit/WebCore/rendering/RenderTreeAsText.cpp

 /*
  * Copyright (C) 2004, 2006, 2007 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 415 matching lines @@
             ts << " clip " << clipRect;
         if (!outlineClipRect.contains(layerBounds))
             ts << " outlineClip " << outlineClipRect;
     }
 
     if (l.renderer()->hasOverflowClip()) {
         if (l.scrollXOffset())
             ts << " scrollX " << l.scrollXOffset();
         if (l.scrollYOffset())
             ts << " scrollY " << l.scrollYOffset();
-        if (l.renderer()->clientWidth() != l.scrollWidth())
+        if (l.renderBox() && l.renderBox()->clientWidth() != l.scrollWidth())
             ts << " scrollWidth " << l.scrollWidth();
-        if (l.renderer()->clientHeight() != l.scrollHeight())
+        if (l.renderBox() && l.renderBox()->clientHeight() != l.scrollHeight())
             ts << " scrollHeight " << l.scrollHeight();
     }
 
     if (layerType == -1)
         ts << " layerType: background only";
     else if (layerType == 1)
         ts << " layerType: foreground only";
 
     ts << "\n";
 
@@ skipping 93 matching lines @@
         o->view()->frameView()->layout();
     if (o->hasLayer()) {
         RenderLayer* l = toRenderBox(o)->layer();
         writeLayers(ts, l, l, IntRect(l->xPos(), l->yPos(), l->width(), l->height()));
         writeSelection(ts, o);
     }
     return ts.release();
 }
 
 } // namespace WebCore