Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/core/layout/LayoutTableCell.h

 /*
  * Copyright (C) 1997 Martin Jones (mjones@kde.org)
  *           (C) 1997 Torben Weis (weis@kde.org)
  *           (C) 1998 Waldo Bastian (bastian@kde.org)
  *           (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2009, 2013 Apple Inc.
  *               All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 260 matching lines @@
     return style()->borderStart();
   }
 
   const BorderValue& borderAdjoiningCellAfter(const LayoutTableCell* cell) {
     DCHECK_EQ(table()->cellBefore(cell), this);
     // FIXME: https://webkit.org/b/79272 - Add support for mixed directionality
     // at the cell level.
     return style()->borderEnd();
   }
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   bool isFirstOrLastCellInRow() const {
     return !table()->cellAfter(this) || !table()->cellBefore(this);
   }
 #endif
 
   const char* name() const override { return "LayoutTableCell"; }
 
   bool backgroundIsKnownToBeOpaqueInRect(const LayoutRect&) const override;
   void invalidateDisplayItemClients(PaintInvalidationReason) const override;
 
@@ skipping 177 matching lines @@
   return toLayoutTableCell(firstChild());
 }
 
 inline LayoutTableCell* LayoutTableRow::lastCell() const {
   return toLayoutTableCell(lastChild());
 }
 
 }  // namespace blink
 
 #endif  // LayoutTableCell_h