Legacy out-of-flow descendant propagation

third_party/WebKit/Source/core/layout/ng/ng_block_node.cc

 // Copyright 2016 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/ng/ng_block_node.h"
 
 #include "core/layout/LayoutBlockFlow.h"
 #include "core/layout/api/LineLayoutAPIShim.h"
 #include "core/layout/line/InlineIterator.h"
 #include "core/layout/ng/layout_ng_block_flow.h"
@@ skipping 307 matching lines @@
   builder.SetInlineSize(layout_box_->logicalWidth())
       .SetBlockSize(layout_box_->logicalHeight())
       .SetDirection(layout_box_->styleRef().direction())
       .SetWritingMode(
           FromPlatformWritingMode(layout_box_->styleRef().getWritingMode()))
       .SetInlineOverflow(overflow.width())
       .SetBlockOverflow(overflow.height());
   return builder.ToFragment();
 }
 
+void NGBlockNode::UseOldOutOfFlowPositioning() {
+  DCHECK(layout_box_);
+  DCHECK(layout_box_->isOutOfFlowPositioned());
+  layout_box_->containingBlock()->insertPositionedObject(layout_box_);
+}
+
 }  // namespace blink