Change about caret painting in slimming paint mode

Source/platform/graphics/ContentLayerDelegate.cpp

 /*
  * Copyright (C) 2012 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
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 72 matching lines @@
     RefPtr<SkPicture> picture;
     SkCanvas* canvas = recorder.beginRecording(clip.width, clip.height);
     canvas->save();
     canvas->translate(-clip.x, -clip.y);
     canvas->clipRect(SkRect::MakeXYWH(clip.x, clip.y, clip.width, clip.height));
     paintContents(canvas, clip, canPaintLCDText, contextStatus);
     canvas->restore();
     picture = adoptRef(recorder.endRecording());
 
     ASSERT(m_painter->displayItemList());
-    ASSERT(m_painter->displayItemList()->paintList().size() > 0);
 
     const PaintList& paintList = m_painter->displayItemList()->paintList();
     for (PaintList::const_iterator it = paintList.begin(); it != paintList.end(); ++it)
         (*it)->appendToWebDisplayItemList(webDisplayItemList);
 }
 
 } // namespace blink