Store repaint rects in the coordinate space of their backing GraphicsLayer.

Source/core/rendering/svg/RenderSVGRoot.cpp

Index: Source/core/rendering/svg/RenderSVGRoot.cpp
diff --git a/Source/core/rendering/svg/RenderSVGRoot.cpp b/Source/core/rendering/svg/RenderSVGRoot.cpp
index 43495c65f464a288bd3716dfa2d0ae8731ed9257..03fa787f7adbc541a5953da6b4a02ddb57b47ee3 100644
--- a/Source/core/rendering/svg/RenderSVGRoot.cpp
+++ b/Source/core/rendering/svg/RenderSVGRoot.cpp
@@ -384,7 +384,7 @@ LayoutRect RenderSVGRoot::clippedOverflowRectForRepaint(const RenderLayerModelOb
 
     // Compute the repaint rect in the parent coordinate space.
     LayoutRect rect = enclosingIntRect(repaintRect);
-    RenderReplaced::computeRectForRepaint(repaintContainer, rect);
+    RenderReplaced::mapRectToRepaintBacking(repaintContainer, rect);
     return rect;
 }
 
@@ -399,7 +399,7 @@ void RenderSVGRoot::computeFloatRectForRepaint(const RenderLayerModelObject* rep
         repaintRect.intersect(pixelSnappedBorderBoxRect());
 
     LayoutRect rect = enclosingIntRect(repaintRect);
-    RenderReplaced::computeRectForRepaint(repaintContainer, rect, fixed);
+    RenderReplaced::mapRectToRepaintBacking(repaintContainer, rect, fixed);
     repaintRect = rect;
 }