Check IsFixed specifically instead of presence of other flags.

third_party/WebKit/Source/core/paint/PaintLayer.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayer.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.cpp b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
index 895daeef48f0d1fa51a5d3e6030c529f6ee116a5..cbc6dc85900aa4745fcd13357bba953d1cc72ee3 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
@@ -1323,7 +1323,7 @@ static inline const PaintLayer* accumulateOffsetTowardsAncestor(const PaintLayer
     if (position == FixedPosition && (!ancestorLayer || ancestorLayer == layoutObject->view()->layer())) {
         // If the fixed layer's container is the root, just add in the offset of the view. We can obtain this by calling
         // localToAbsolute() on the LayoutView.
-        FloatPoint absPos = layoutObject->localToAbsolute(FloatPoint(), IsFixed);
+        FloatPoint absPos = layoutObject->localToAbsolute();
         location += LayoutSize(absPos.x(), absPos.y());
         return ancestorLayer;
     }