Fix incorrect use of coords conversion for sticky elements

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

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 356 matching lines @@
   bool HasAncestorWithFilterThatMovesPixels() const;
 
   bool CanUseConvertToLayerCoords() const {
     // These LayoutObjects have an impact on their layers without the
     // layoutObjects knowing about it.
     return !GetLayoutObject().HasTransformRelatedProperty() &&
            !GetLayoutObject().IsSVGRoot();
   }
 
   void ConvertToLayerCoords(const PaintLayer* ancestor_layer,
-                            LayoutPoint&) const;
+                            LayoutPoint&,
+                            bool* is_descendant = nullptr) const;
   void ConvertToLayerCoords(const PaintLayer* ancestor_layer,
                             LayoutRect&) const;
 
   // Does the same as convertToLayerCoords() when not in multicol. For multicol,
   // however, convertToLayerCoords() calculates the offset in flow-thread
   // coordinates (what the layout engine uses internally), while this method
   // calculates the visual coordinates; i.e. it figures out which column the
   // layer starts in and adds in the offset. See
   // http://www.chromium.org/developers/design-documents/multi-column-layout for
   // more info.
@@ skipping 889 matching lines @@
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 CORE_EXPORT void showLayerTree(const blink::PaintLayer*);
 CORE_EXPORT void showLayerTree(const blink::LayoutObject*);
 #endif
 
 #endif  // Layer_h