Deprecate the currently used NGMarginStrut in favor of the new one.

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/ng_constraint_space.h"
 #include "core/layout/ng/ng_floating_object.h"
 #include "core/layout/ng/ng_physical_fragment.h"
@@ skipping 75 matching lines @@
 
   NGFragmentBuilder& AddUnpositionedFloat(NGFloatingObject* floating_object);
 
   void SetBreakToken(NGBreakToken* token) {
     DCHECK(!break_token_);
     break_token_ = token;
   }
   bool HasBreakToken() const { return break_token_; }
 
   // Sets MarginStrut for the resultant fragment.
-  NGFragmentBuilder& SetMarginStrutBlockStart(const NGMarginStrut& from);
-  NGFragmentBuilder& SetMarginStrutBlockEnd(const NGMarginStrut& from);
+  NGFragmentBuilder& SetMarginStrutBlockStart(
+      const NGDeprecatedMarginStrut& from);
+  NGFragmentBuilder& SetMarginStrutBlockEnd(
+      const NGDeprecatedMarginStrut& from);
 
   // Offsets are not supposed to be set during fragment construction, so we
   // do not provide a setter here.
 
   // Creates the fragment. Can only be called once.
   NGPhysicalBoxFragment* ToBoxFragment();
   NGPhysicalTextFragment* ToTextFragment(NGInlineNode*,
                                          unsigned start_index,
                                          unsigned end_index);
 
@@ skipping 23 matching lines @@
     NGStaticPosition descendant_position;
   };
 
   NGPhysicalFragment::NGFragmentType type_;
   NGWritingMode writing_mode_;
   TextDirection direction_;
 
   NGLogicalSize size_;
   NGLogicalSize overflow_;
 
-  NGMarginStrut margin_strut_;
+  NGDeprecatedMarginStrut margin_strut_;
 
   HeapVector<Member<NGPhysicalFragment>> children_;
   Vector<NGLogicalOffset> offsets_;
 
   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.
   HeapVector<Member<NGFloatingObject>> unpositioned_floats_;
 
   Vector<NGLogicalOffset> floating_object_offsets_;
   HeapVector<Member<NGFloatingObject>> positioned_floats_;
 
   Member<NGBreakToken> break_token_;
 };
 
 }  // namespace blink
 
 #endif  // NGFragmentBuilder