WebKit: make #if DCHECK_IS_ON consistent in third_party/WebKit/Source/platform/

third_party/WebKit/Source/platform/graphics/paint/SubsequenceDisplayItem.h

 // Copyright 2015 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 SubsequenceDisplayItem_h
 #define SubsequenceDisplayItem_h
 
 #include "platform/geometry/FloatRect.h"
 #include "platform/graphics/paint/DisplayItem.h"
 #include "wtf/Assertions.h"
 
 namespace blink {
 
 class BeginSubsequenceDisplayItem final : public PairedBeginDisplayItem {
  public:
   BeginSubsequenceDisplayItem(const DisplayItemClient& client)
       : PairedBeginDisplayItem(client, kSubsequence, sizeof(*this)) {}
 };
 
 class EndSubsequenceDisplayItem final : public PairedEndDisplayItem {
  public:
   EndSubsequenceDisplayItem(const DisplayItemClient& client)
       : PairedEndDisplayItem(client, kEndSubsequence, sizeof(*this)) {}
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   bool isEndAndPairedWith(DisplayItem::Type otherType) const final {
     return getType() == kEndSubsequence && otherType == kSubsequence;
   }
 #endif
 };
 
 }  // namespace blink
 
 #endif  // SubsequenceDisplayItem_h