[LayoutNG] Split apart CreateConstraintSpaceForChild.

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/geometry/ng_margin_strut.h"
 #include "core/layout/ng/ng_block_node.h"
@@ skipping 24 matching lines @@
 
   Optional<MinMaxContentSize> ComputeMinMaxContentSize() const override;
   RefPtr<NGLayoutResult> Layout() override;
 
  private:
   NGBoxStrut CalculateMargins(NGBlockNode* child,
                               const NGConstraintSpace& space);
 
   // Creates a new constraint space for the current child.
   RefPtr<NGConstraintSpace> CreateConstraintSpaceForChild(NGLayoutInputNode*);
+  void PrepareChildLayout(NGLayoutInputNode*);
   void FinishChildLayout(NGLayoutInputNode*,
                          NGConstraintSpace*,
                          RefPtr<NGLayoutResult>);
 
   // Final adjustments before fragment creation. We need to prevent the
   // fragment from crossing fragmentainer boundaries, and rather create a break
   // token if we're out of space.
   void FinalizeForFragmentation();
 
   // Calculates logical offset for the current fragment using either
@@ skipping 34 matching lines @@
   LayoutUnit max_inline_size_;
   // MarginStrut for the previous child.
   NGMarginStrut curr_margin_strut_;
   NGLogicalOffset curr_bfc_offset_;
   NGBoxStrut curr_child_margins_;
 };
 
 }  // namespace blink
 
 #endif  // NGBlockLayoutAlgorithm_h