[LayoutNG] Introduce NGPositionedFloat.

third_party/WebKit/Source/core/layout/ng/ng_physical_box_fragment.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 NGPhysicalBoxFragment_h
 #define NGPhysicalBoxFragment_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/geometry/ng_logical_offset.h"
 #include "core/layout/ng/geometry/ng_margin_strut.h"
 #include "core/layout/ng/ng_floating_object.h"
 #include "core/layout/ng/ng_physical_fragment.h"
+#include "core/layout/ng/ng_positioned_float.h"
 #include "platform/wtf/Optional.h"
 
 namespace blink {
 
-struct NGFloatingObject;
-
 class CORE_EXPORT NGPhysicalBoxFragment final : public NGPhysicalFragment {
  public:
   // This modifies the passed-in children vector.
   NGPhysicalBoxFragment(LayoutObject* layout_object,
                         NGPhysicalSize size,
                         NGPhysicalSize overflow,
                         Vector<RefPtr<NGPhysicalFragment>>& children,
-                        Vector<RefPtr<NGFloatingObject>>& positioned_floats,
+                        Vector<NGPositionedFloat>& positioned_floats,
                         const WTF::Optional<NGLogicalOffset>& bfc_offset,
                         const NGMarginStrut& end_margin_strut,
                         RefPtr<NGBreakToken> break_token = nullptr);
 
   // Returns the total size, including the contents outside of the border-box.
   NGPhysicalSize OverflowSize() const { return overflow_; }
 
   const Vector<RefPtr<NGPhysicalFragment>>& Children() const {
     return children_;
   }
 
   // List of positioned floats that need to be copied to the old layout tree.
   // TODO(layout-ng): remove this once we change painting code to handle floats
   // differently.
-  const Vector<RefPtr<NGFloatingObject>>& PositionedFloats() const {
+  const Vector<NGPositionedFloat>& PositionedFloats() const {
     return positioned_floats_;
   }
 
   const WTF::Optional<NGLogicalOffset>& BfcOffset() const {
     return bfc_offset_;
   }
 
   const NGMarginStrut& EndMarginStrut() const { return end_margin_strut_; }
 
  private:
   NGPhysicalSize overflow_;
   Vector<RefPtr<NGPhysicalFragment>> children_;
-  Vector<RefPtr<NGFloatingObject>> positioned_floats_;
+  Vector<NGPositionedFloat> positioned_floats_;
   const WTF::Optional<NGLogicalOffset> bfc_offset_;
   const NGMarginStrut end_margin_strut_;
 };
 
 DEFINE_TYPE_CASTS(NGPhysicalBoxFragment,
                   NGPhysicalFragment,
                   fragment,
                   fragment->Type() == NGPhysicalFragment::kFragmentBox,
                   fragment.Type() == NGPhysicalFragment::kFragmentBox);
 
 }  // namespace blink
 
 #endif  // NGPhysicalBoxFragment_h