[RAL] Reduce SVG tree walks

Source/core/rendering/svg/SVGRenderSupport.h

Index: Source/core/rendering/svg/SVGRenderSupport.h
diff --git a/Source/core/rendering/svg/SVGRenderSupport.h b/Source/core/rendering/svg/SVGRenderSupport.h
index 641e08cb675fe573c9207ce9cc48c824a2f54c4b..33a15c1dc1d6d117ed815583bf8a0805b8419f2d 100644
--- a/Source/core/rendering/svg/SVGRenderSupport.h
+++ b/Source/core/rendering/svg/SVGRenderSupport.h
@@ -72,6 +72,8 @@ public:
 
     static bool paintInfoIntersectsRepaintRect(const FloatRect& localRepaintRect, const AffineTransform& localTransform, const PaintInfo&);
 
+    static bool parentTransformDidChange(RenderObject*);

[leviw_travelin_and_unemployed, 2014/06/10 23:32:26]

Why RenderObject and not RenderSVGModelObject? I guess it's consistent with the
rest of the code, it's just weird to me.

[pdr., 2014/06/11 03:09:24]

Sometimes svg..
https://docs.google.com/a/chromium.org/drawings/d/1nayJX5XcclYj_-blbVuakVNjVW...

+
     // Important functions used by nearly all SVG renderers centralizing coordinate transformations / repaint rect calculations
     static LayoutRect clippedOverflowRectForRepaint(const RenderObject*, const RenderLayerModelObject* repaintContainer);
     static void computeFloatRectForRepaint(const RenderObject*, const RenderLayerModelObject* repaintContainer, FloatRect&, bool fixed);