Compute correct repaint rect for decorated RenderSVGRoots

Source/core/rendering/RenderBoxModelObject.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2005 Allan Sandfeld Jensen (kde@carewolf.com)
  *           (C) 2005, 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Google Inc. 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
@@ skipping 110 matching lines @@
     ASSERT(!continuation());
 
     // If this is a first-letter object with a remaining text fragment then the
     // entry needs to be cleared from the map.
     if (firstLetterRemainingText())
         setFirstLetterRemainingText(0);
 
     RenderLayerModelObject::willBeDestroyed();
 }
 
+bool RenderBoxModelObject::calculateHasBoxDecorations() const
+{
+    RenderStyle* styleToUse = style();
+    ASSERT(styleToUse);
+    return hasBackground() || styleToUse->hasBorder() || styleToUse->hasAppearance() || styleToUse->boxShadow();
+}
+
 void RenderBoxModelObject::updateFromStyle()
 {
     RenderLayerModelObject::updateFromStyle();
 
     RenderStyle* styleToUse = style();
-    setHasBoxDecorations(hasBackground() || styleToUse->hasBorder() || styleToUse->hasAppearance() || styleToUse->boxShadow());
+    setHasBoxDecorations(calculateHasBoxDecorations());
     setInline(styleToUse->isDisplayInlineType());
     setPositionState(styleToUse->position());
     setHorizontalWritingMode(styleToUse->isHorizontalWritingMode());
 }
 
 static LayoutSize accumulateInFlowPositionOffsets(const RenderObject* child)
 {
     if (!child->isAnonymousBlock() || !child->isInFlowPositioned())
         return LayoutSize();
     LayoutSize offset;
@@ skipping 2670 matching lines @@
     ASSERT(!beforeChild || toBoxModelObject == beforeChild->parent());
     for (RenderObject* child = startChild; child && child != endChild; ) {
         // Save our next sibling as moveChildTo will clear it.
         RenderObject* nextSibling = child->nextSibling();
         moveChildTo(toBoxModelObject, child, beforeChild, fullRemoveInsert);
         child = nextSibling;
     }
 }
 
 } // namespace WebCore