Compute and include the offset of the sticky box to its enclosing composited layer.

cc/blink/web_layer_impl.cc

 // 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 "cc/blink/web_layer_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 354 matching lines @@
   blink::WebLayerStickyPositionConstraint web_constraint;
   web_constraint.isSticky = constraint.is_sticky;
   web_constraint.isAnchoredLeft = constraint.is_anchored_left;
   web_constraint.isAnchoredRight = constraint.is_anchored_right;
   web_constraint.isAnchoredTop = constraint.is_anchored_top;
   web_constraint.isAnchoredBottom = constraint.is_anchored_bottom;
   web_constraint.leftOffset = constraint.left_offset;
   web_constraint.rightOffset = constraint.right_offset;
   web_constraint.topOffset = constraint.top_offset;
   web_constraint.bottomOffset = constraint.bottom_offset;
+  web_constraint.parentRelativeStickyBoxOffset =
+      constraint.parent_relative_sticky_box_offset;
   web_constraint.scrollContainerRelativeStickyBoxRect =
       constraint.scroll_container_relative_sticky_box_rect;
   web_constraint.scrollContainerRelativeContainingBlockRect =
       constraint.scroll_container_relative_containing_block_rect;
   return web_constraint;
 }
 static cc::LayerStickyPositionConstraint ToStickyPositionConstraint(
     const blink::WebLayerStickyPositionConstraint& web_constraint) {
   cc::LayerStickyPositionConstraint constraint;
   constraint.is_sticky = web_constraint.isSticky;
   constraint.is_anchored_left = web_constraint.isAnchoredLeft;
   constraint.is_anchored_right = web_constraint.isAnchoredRight;
   constraint.is_anchored_top = web_constraint.isAnchoredTop;
   constraint.is_anchored_bottom = web_constraint.isAnchoredBottom;
   constraint.left_offset = web_constraint.leftOffset;
   constraint.right_offset = web_constraint.rightOffset;
   constraint.top_offset = web_constraint.topOffset;
   constraint.bottom_offset = web_constraint.bottomOffset;
+  constraint.parent_relative_sticky_box_offset =
+      web_constraint.parentRelativeStickyBoxOffset;
   constraint.scroll_container_relative_sticky_box_rect =
       web_constraint.scrollContainerRelativeStickyBoxRect;
   constraint.scroll_container_relative_containing_block_rect =
       web_constraint.scrollContainerRelativeContainingBlockRect;
   return constraint;
 }
 void WebLayerImpl::setStickyPositionConstraint(
     const blink::WebLayerStickyPositionConstraint& constraint) {
   layer_->SetStickyPositionConstraint(ToStickyPositionConstraint(constraint));
 }
@@ skipping 61 matching lines @@
 
 void WebLayerImpl::SetContentsOpaqueIsFixed(bool fixed) {
   contents_opaque_is_fixed_ = fixed;
 }
 
 void WebLayerImpl::setHasWillChangeTransformHint(bool has_will_change) {
   layer_->SetHasWillChangeTransformHint(has_will_change);
 }
 
 }  // namespace cc_blink