blink: Remove CHECK_CONSISTENCY.

third_party/WebKit/Source/core/layout/line/LineBoxList.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 39 matching lines @@
  public:
   LineBoxList() : first_line_box_(nullptr), last_line_box_(nullptr) {}
 
 #if DCHECK_IS_ON()
   ~LineBoxList();
 #endif
 
   InlineFlowBox* FirstLineBox() const { return first_line_box_; }
   InlineFlowBox* LastLineBox() const { return last_line_box_; }
 
-  void CheckConsistency() const;
-
   void AppendLineBox(InlineFlowBox*);
 
   void DeleteLineBoxTree();
   void DeleteLineBoxes();
 
   void ExtractLineBox(InlineFlowBox*);
   void AttachLineBox(InlineFlowBox*);
   void RemoveLineBox(InlineFlowBox*);
 
   void DirtyLineBoxes();
@@ skipping 21 matching lines @@
                            const CullRect&,
                            const LayoutPoint&) const;
 
   // For block flows, each box represents the root inline box for a line in the
   // paragraph.
   // For inline flows, each box represents a portion of that inline.
   InlineFlowBox* first_line_box_;
   InlineFlowBox* last_line_box_;
 };
 
-#if !DCHECK_IS_ON()
-inline void LineBoxList::CheckConsistency() const {}
-#endif
-
 }  // namespace blink
 
 #endif  // LineBoxList_h