Revert of Separate repaint and layout requirements of StyleDifference (Step 1)

Source/core/rendering/svg/RenderSVGModelObject.cpp

 /*
  * Copyright (c) 2009, 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 82 matching lines @@
     SVGRenderSupport::findTreeRootObject(this)->computeLayerHitTestRects(rects);
 }
 
 void RenderSVGModelObject::addLayerHitTestRects(LayerHitTestRects&, const RenderLayer* currentLayer, const LayoutPoint& layerOffset, const LayoutRect& containerRect) const
 {
     // We don't walk into SVG trees at all - just report their container.
 }
 
 void RenderSVGModelObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
 {
-    if (diff.needsFullLayout()) {
+    if (diff == StyleDifferenceLayout) {
         setNeedsBoundariesUpdate();
         if (style()->hasTransform())
             setNeedsTransformUpdate();
     }
 
     RenderObject::styleDidChange(diff, oldStyle);
     SVGResourcesCache::clientStyleChanged(this, diff, style());
 }
 
 bool RenderSVGModelObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation&, const LayoutPoint&, HitTestAction)
 {
     ASSERT_NOT_REACHED();
     return false;
 }
 
 // The SVG addFocusRingRects() method adds rects in local coordinates so the default absoluteFocusRingQuads
 // returns incorrect values for SVG objects. Overriding this method provides access to the absolute bounds.
 void RenderSVGModelObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads)
 {
     quads.append(localToAbsoluteQuad(FloatQuad(repaintRectInLocalCoordinates())));
 }
 
 } // namespace WebCore