[LayoutNG] Fix orthogonal writing mode child margin strut from being used in collapsing margins cal…

third_party/WebKit/Source/core/layout/ng/ng_physical_fragment_base.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 NGPhysicalFragmentBase_h
 #define NGPhysicalFragmentBase_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_constraint_space.h"
 #include "core/layout/ng/ng_units.h"
@@ skipping 41 matching lines @@
     return offset_.top;
   }
 
   // Should only be used by the parent fragement's layout.
   void SetOffset(NGPhysicalOffset offset) {
     DCHECK(!has_been_placed_);
     offset_ = offset;
     has_been_placed_ = true;
   }
 
-  NGMarginStrut MarginStrut() const { return margin_strut_; }
-
   DEFINE_INLINE_TRACE_AFTER_DISPATCH() {}
   DECLARE_TRACE();
 
  protected:
   NGPhysicalFragmentBase(NGPhysicalSize size,
                          NGPhysicalSize overflow,
-                         NGFragmentType type,
-                         NGMarginStrut margin_strut)
+                         NGFragmentType type)
       : size_(size),
         overflow_(overflow),
-        margin_strut_(margin_strut),
         type_(type),
         has_been_placed_(false) {}
 
   NGPhysicalSize size_;
   NGPhysicalSize overflow_;
   NGPhysicalOffset offset_;
-  NGMarginStrut margin_strut_;
 
   unsigned type_ : 1;
   unsigned has_been_placed_ : 1;
 };
 
 }  // namespace blink
 
 #endif  // NGFragmentBase_h