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

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

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/layout/compositing/CompositingInputsUpdater.h"
 
 #include "core/dom/Document.h"
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutBlock.h"
 #include "core/layout/LayoutView.h"
@@ skipping 86 matching lines @@
 void CompositingInputsUpdater::UpdateRecursive(PaintLayer* layer,
                                                UpdateType update_type,
                                                AncestorInfo info) {
   if (!layer->ChildNeedsCompositingInputsUpdate() &&
       update_type != kForceUpdate)
     return;
 
   const PaintLayer* previous_overflow_layer = layer->AncestorOverflowLayer();
   layer->UpdateAncestorOverflowLayer(info.last_overflow_clip_layer);
   if (info.last_overflow_clip_layer && layer->NeedsCompositingInputsUpdate() &&
-      layer->GetLayoutObject().Style()->HasStickyConstrainedPosition()) {
+      layer->GetLayoutObject().Style()->GetPosition() == EPosition::kSticky) {
     if (!RuntimeEnabledFeatures::rootLayerScrollingEnabled()) {
       if (info.last_overflow_clip_layer != previous_overflow_layer) {
         // Old ancestor scroller should no longer have these constraints.
         DCHECK(!previous_overflow_layer ||
                !previous_overflow_layer->GetScrollableArea()
                     ->GetStickyConstraintsMap()
                     .Contains(layer));
 
         // If our ancestor scroller has changed and the previous one was the
         // root layer, we are no longer viewport constrained.
@@ skipping 160 matching lines @@
   DCHECK(!layer->NeedsCompositingInputsUpdate());
 
   for (PaintLayer* child = layer->FirstChild(); child;
        child = child->NextSibling())
     AssertNeedsCompositingInputsUpdateBitsCleared(child);
 }
 
 #endif
 
 }  // namespace blink