Remove painting roots.

sky/engine/core/rendering/RenderReplaced.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011-2012. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 90 matching lines @@
         return;
     }
 
     LayoutRect paintRect = LayoutRect(adjustedPaintOffset, size());
     if (paintInfo.phase == PaintPhaseForeground && style()->outlineWidth())
         paintOutline(paintInfo, paintRect);
 
     if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && !canHaveChildren())
         return;
 
-    if (!paintInfo.shouldPaintWithinRoot(this))
-        return;
-
     bool drawSelectionTint = selectionState() != SelectionNone;
     if (paintInfo.phase == PaintPhaseSelection) {
         if (selectionState() == SelectionNone)
             return;
         drawSelectionTint = false;
     }
 
     bool completelyClippedOut = false;
     if (style()->hasBorderRadius()) {
         LayoutRect borderRect = LayoutRect(adjustedPaintOffset, size());
@@ skipping 19 matching lines @@
     // surrounding content.
     if (drawSelectionTint) {
         LayoutRect selectionPaintingRect = localSelectionRect();
         selectionPaintingRect.moveBy(adjustedPaintOffset);
         paintInfo.context->fillRect(pixelSnappedIntRect(selectionPaintingRect), selectionBackgroundColor());
     }
 }
 
 bool RenderReplaced::shouldPaint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
-    if (!paintInfo.shouldPaintWithinRoot(this))
-        return false;
-
     LayoutPoint adjustedPaintOffset = paintOffset + location();
 
     // Early exit if the element touches the edges.
     LayoutUnit top = adjustedPaintOffset.y() + visualOverflowRect().y();
     LayoutUnit bottom = adjustedPaintOffset.y() + visualOverflowRect().maxY();
     if (isSelected() && inlineBoxWrapper()) {
         LayoutUnit selTop = paintOffset.y() + inlineBoxWrapper()->root().selectionTop();
         LayoutUnit selBottom = paintOffset.y() + selTop + inlineBoxWrapper()->root().selectionHeight();
         top = std::min(selTop, top);
         bottom = std::max(selBottom, bottom);
@@ skipping 310 matching lines @@
     if (s == SelectionEnd)
         return selectionEnd == end;
     if (s == SelectionBoth)
         return selectionStart == 0 && selectionEnd == end;
 
     ASSERT(0);
     return false;
 }
 
 }