Revert of Revert of Divorce PaintInvalidationState from LayoutState

Source/core/rendering/svg/RenderSVGGradientStop.h

Index: Source/core/rendering/svg/RenderSVGGradientStop.h
diff --git a/Source/core/rendering/svg/RenderSVGGradientStop.h b/Source/core/rendering/svg/RenderSVGGradientStop.h
index 4d6fee111217ce5237b748d4387d2abff9eeebfd..97d3e3ee040d1545326f95abf796ed95ce1307a7 100644
--- a/Source/core/rendering/svg/RenderSVGGradientStop.h
+++ b/Source/core/rendering/svg/RenderSVGGradientStop.h
@@ -43,7 +43,7 @@
     // This overrides are needed to prevent ASSERTs on <svg><stop /></svg>
     // RenderObject's default implementations ASSERT_NOT_REACHED()
     // https://bugs.webkit.org/show_bug.cgi?id=20400
-    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject*) const OVERRIDE { return LayoutRect(); }
+    virtual LayoutRect clippedOverflowRectForPaintInvalidation(const RenderLayerModelObject*, const PaintInvalidationState* = 0) const OVERRIDE { return LayoutRect(); }
     virtual FloatRect objectBoundingBox() const OVERRIDE { return FloatRect(); }
     virtual FloatRect strokeBoundingBox() const OVERRIDE { return FloatRect(); }
     virtual FloatRect paintInvalidationRectInLocalCoordinates() const OVERRIDE { return FloatRect(); }