Add offset contributed to sticky position box rect by location containers

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

Index: third_party/WebKit/Source/core/layout/LayoutObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.cpp b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
index fae72842b367f9582de641faae9588229239546c..b5f82161f715d5037408dd464fcc40636cb03645 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.cpp
@@ -2237,14 +2237,28 @@ FloatQuad LayoutObject::localToAncestorQuad(
     const FloatQuad& localQuad,
     const LayoutBoxModelObject* ancestor,
     MapCoordinatesFlags mode) const {
+  return localToAncestorQuadInternal(localQuad, ancestor, mode | UseTransforms);
+}
+
+FloatQuad LayoutObject::localToAncestorQuadWithoutTransforms(
+    const FloatQuad& localQuad,
+    const LayoutBoxModelObject* ancestor,
+    MapCoordinatesFlags mode) const {
+  DCHECK(!(mode & UseTransforms));
+  return localToAncestorQuadInternal(localQuad, ancestor, mode);
+}
+
+FloatQuad LayoutObject::localToAncestorQuadInternal(
+    const FloatQuad& localQuad,
+    const LayoutBoxModelObject* ancestor,
+    MapCoordinatesFlags mode) const {
   // Track the point at the center of the quad's bounding box. As
   // mapLocalToAncestor() calls offsetFromContainer(), it will use that point
   // as the reference point to decide which column's transform to apply in
   // multiple-column blocks.
   TransformState transformState(TransformState::ApplyTransformDirection,
                                 localQuad.boundingBox().center(), localQuad);
-  mapLocalToAncestor(ancestor, transformState,
-                     mode | ApplyContainerFlip | UseTransforms);
+  mapLocalToAncestor(ancestor, transformState, mode | ApplyContainerFlip);
   transformState.flatten();
 
   return transformState.lastPlanarQuad();