[LayoutNG] Introduce NGPositionedFloat.

third_party/WebKit/Source/core/layout/ng/ng_fragment_builder.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 NGFragmentBuilder_h
 #define NGFragmentBuilder_h
 
 #include "core/layout/ng/inline/ng_physical_text_fragment.h"
 #include "core/layout/ng/ng_break_token.h"
 #include "core/layout/ng/ng_constraint_space.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/Allocator.h"
 
 namespace blink {
 
 class NGLayoutResult;
 
 class CORE_EXPORT NGFragmentBuilder final {
   DISALLOW_NEW();
 
  public:
@@ skipping 82 matching lines @@
   Vector<RefPtr<NGFloatingObject>>& MutableUnpositionedFloats() {
     return unpositioned_floats_;
   }
 
   // List of floats that need to be positioned.
   const Vector<RefPtr<NGFloatingObject>>& UnpositionedFloats() const {
     return unpositioned_floats_;
   }
 
   // Mutable list of positioned floats, i.e. floats with logical_offset set.
-  Vector<RefPtr<NGFloatingObject>>& MutablePositionedFloats() {
+  Vector<NGPositionedFloat>& MutablePositionedFloats() {
     return positioned_floats_;
   }
 
   const WTF::Optional<NGLogicalOffset>& BfcOffset() const {
     return bfc_offset_;
   }
 
   const Vector<RefPtr<NGPhysicalFragment>>& Children() const {
     return children_;
   }
@@ skipping 40 matching lines @@
   WeakBoxList out_of_flow_descendant_candidates_;
   Vector<OutOfFlowPlacement> out_of_flow_candidate_placements_;
 
   WeakBoxList out_of_flow_descendants_;
   Vector<NGStaticPosition> out_of_flow_positions_;
 
   // Floats that need to be positioned by the next in-flow fragment that can
   // determine its block position in space.
   Vector<RefPtr<NGFloatingObject>> unpositioned_floats_;
 
-  Vector<RefPtr<NGFloatingObject>> positioned_floats_;
+  Vector<NGPositionedFloat> positioned_floats_;
 
   WTF::Optional<NGLogicalOffset> bfc_offset_;
   NGMarginStrut end_margin_strut_;
 };
 
 }  // namespace blink
 
 #endif  // NGFragmentBuilder