Legacy out-of-flow descendant propagation

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

 // 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.
 
 #ifndef NGBlockNode_h
 #define NGBlockNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_input_node.h"
 #include "platform/heap/Handle.h"
@@ skipping 43 matching lines @@
 
   void SetNextSibling(NGBlockNode*);
   void SetFirstChild(NGLayoutInputNode*);
 
   DECLARE_VIRTUAL_TRACE();
 
   // Runs layout on layout_box_ and creates a fragment for the resulting
   // geometry.
   NGPhysicalFragment* RunOldLayout(const NGConstraintSpace&);
 
+  void UseOldOutOfFlowPositioning();

[cbiesinger, 2016/12/13 20:59:06]

This does need a comment :)

[atotic, 2016/12/13 21:18:20]

done

// Call if this out-of-flow block needs to be positioned with
// legacy Layout.

+
   void UpdateLayoutBox(NGPhysicalFragment* fragment,
                        const NGConstraintSpace* constraint_space);
 
  private:
   // This is necessary for interop between old and new trees -- after our parent
   // positions us, it calls this function so we can store the position on the
   // underlying LayoutBox.
   void PositionUpdated();
 
   bool CanUseNewLayout();
@@ skipping 16 matching lines @@
 
 DEFINE_TYPE_CASTS(NGBlockNode,
                   NGLayoutInputNode,
                   node,
                   node->Type() == NGLayoutInputNode::kLegacyBlock,
                   node.Type() == NGLayoutInputNode::kLegacyBlock);
 
 }  // namespace blink
 
 #endif  // NGBlockNode