Refactor to simplify how layerType is stored on PaintLayers.

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
index 6a795f67e699618fb651b9d3d7be0be9f15969f6..741286da4423015721e3b7da14c1526451a2116d 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
@@ -228,10 +228,6 @@ void LayoutBoxModelObject::styleDidChange(StyleDifference diff, const ComputedSt
     }
 
     if (layer()) {
-        // FIXME: Ideally we shouldn't need this setter but we can't easily infer an overflow-only layer
-        // from the style.
-        layer()->setLayerType(type);
-
         layer()->styleDidChange(diff, oldStyle);
         if (hadLayer && layer()->isSelfPaintingLayer() != layerWasSelfPainting)
             setChildNeedsLayout();