[layoutng] Split NGLayoutResult out of NGPhysicalFragment

third_party/WebKit/Source/core/layout/ng/ng_block_layout_algorithm.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 NGBlockLayoutAlgorithm_h
 #define NGBlockLayoutAlgorithm_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_block_node.h"
 #include "core/layout/ng/ng_break_token.h"
 #include "core/layout/ng/ng_column_mapper.h"
 #include "core/layout/ng/ng_fragment_builder.h"
 #include "core/layout/ng/ng_layout_algorithm.h"
 #include "core/layout/ng/ng_units.h"
 #include "wtf/RefPtr.h"
 
 namespace blink {
 
 class ComputedStyle;
 class NGBlockBreakToken;
 class NGConstraintSpace;
 class NGConstraintSpaceBuilder;
 class NGInlineNode;
+class NGLayoutResult;
 class NGPhysicalFragment;
 
 // A class for general block layout (e.g. a <div> with no special style).
 // Lays out the children in sequence.
 class CORE_EXPORT NGBlockLayoutAlgorithm : public NGLayoutAlgorithm {
  public:
   // Default constructor.
   // @param layout_object The layout object associated with this block.
   // @param style Style reference of the block that is being laid out.
   // @param first_child Our first child; the algorithm will use its NextSibling
   //                    method to access all the children.
   // @param space The constraint space which the algorithm should generate a
   //              fragment within.
   NGBlockLayoutAlgorithm(LayoutObject* layout_object,
                          PassRefPtr<const ComputedStyle> style,
                          NGLayoutInputNode* first_child,
                          NGConstraintSpace* space,
                          NGBreakToken* break_token = nullptr);
 
   Optional<MinAndMaxContentSizes> ComputeMinAndMaxContentSizes() const override;
-  RefPtr<NGPhysicalFragment> Layout() override;
+  RefPtr<NGLayoutResult> Layout() override;
 
  private:
   NGBoxStrut CalculateMargins(const NGConstraintSpace& space,
                               const ComputedStyle& style);
 
   // Creates a new constraint space for the current child.
   NGConstraintSpace* CreateConstraintSpaceForCurrentChild();
-  void FinishCurrentChildLayout(RefPtr<NGPhysicalBoxFragment>);
+  void FinishCurrentChildLayout(RefPtr<NGLayoutResult>);
 
   // Layout inline children.
   void LayoutInlineChildren(NGInlineNode*);
 
   // Proceed to the next sibling that still needs layout.
   //
   // @param child_fragment The newly created fragment for the current child.
   // @return true if we can continue to lay out, or false if we need to abort
   // due to a fragmentainer break.
   bool ProceedToNextUnfinishedSibling(NGPhysicalFragment* child_fragment);
@@ skipping 85 matching lines @@
   // MarginStrut for the previous child.
   NGMarginStrut curr_margin_strut_;
   NGLogicalOffset bfc_offset_;
   NGLogicalOffset curr_bfc_offset_;
   NGBoxStrut curr_child_margins_;
 };
 
 }  // namespace blink
 
 #endif  // NGBlockLayoutAlgorithm_h