[layoutng] Refactor NGBox::Layout

third_party/WebKit/Source/core/layout/ng/ng_box.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 NGBox_h
 #define NGBox_h
 
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
 
@@ skipping 38 matching lines @@
   }
 
  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();
 
+  // After we run the layout algorithm, this function copies back the geometry
+  // data to the layout box.
+  void CopyFragmentDataToLayoutBox(const NGConstraintSpace&);
+
+  // Runs layout on layout_box_ and creates a fragment for the resulting
+  // geometry.
+  NGPhysicalFragment* RunOldLayout(const NGConstraintSpace&);
+
   // We can either wrap a layout_box_ or a style_/next_sibling_/first_child_
   // combination.
   LayoutBox* layout_box_;
   RefPtr<ComputedStyle> style_;
   Member<NGBox> next_sibling_;
   Member<NGBox> first_child_;
   Member<NGBlockLayoutAlgorithm> algorithm_;
   Member<NGPhysicalFragment> fragment_;
 };
 
 }  // namespace blink
 
 #endif  // NGBox_h