Revert of Only create sticky position constraints for constrained sticky position.

third_party/WebKit/Source/core/layout/compositing/CompositedLayerMapping.cpp

 /*
  * Copyright (C) 2009, 2010, 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 271 matching lines @@
 }
 
 void CompositedLayerMapping::UpdateBackdropFilters(const ComputedStyle& style) {
   graphics_layer_->SetBackdropFilters(
       OwningLayer().CreateCompositorFilterOperationsForBackdropFilter(style));
 }
 
 void CompositedLayerMapping::UpdateStickyConstraints(
     const ComputedStyle& style,
     const PaintLayer* compositing_container) {
-  bool sticky = style.HasStickyConstrainedPosition();
+  bool sticky = style.GetPosition() == EPosition::kSticky;
   const PaintLayer* ancestor_overflow_layer =
       owning_layer_.AncestorOverflowLayer();
   // TODO(flackr): Do we still need this?
   if (sticky) {
     if (!ancestor_overflow_layer->IsRootLayer()) {
       sticky = ancestor_overflow_layer->NeedsCompositedScrolling();
     } else {
       sticky = GetLayoutObject().View()->GetFrameView()->IsScrollable();
     }
   }
@@ skipping 3305 matching lines @@
   } else if (graphics_layer == decoration_outline_layer_.get()) {
     name = "Decoration Layer";
   } else {
     NOTREACHED();
   }
 
   return name;
 }
 
 }  // namespace blink