[LayoutNG] Move remaining ng_units structs to their own files

third_party/WebKit/Source/core/layout/ng/ng_physical_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 NGPhysicalFragment_h
 #define NGPhysicalFragment_h
 
 #include "core/CoreExport.h"
-#include "core/layout/ng/ng_units.h"
+#include "core/layout/ng/geometry/ng_physical_offset.h"
+#include "core/layout/ng/geometry/ng_physical_size.h"
 #include "platform/LayoutUnit.h"
 #include "platform/heap/Handle.h"
 #include "wtf/Vector.h"
 
 namespace blink {
 
 class ComputedStyle;
 class LayoutObject;
 class NGBreakToken;
 
@@ skipping 85 matching lines @@
   unsigned type_ : 1;
   unsigned is_placed_ : 1;
 
  private:
   void destroy() const;
 };
 
 }  // namespace blink
 
 #endif  // NGPhysicalFragment_h