Clean up some assertion code in WebKit.

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

 // Copyright 2014 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 DrawingDisplayItem_h
 #define DrawingDisplayItem_h
 
 #include "platform/PlatformExport.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/geometry/FloatPoint.h"
@@ skipping 15 matching lines @@
     void replay(GraphicsContext&) const override;
     void appendToWebDisplayItemList(const IntRect&, WebDisplayItemList*) const override;
     bool drawsContent() const override;
 
     const SkPicture* picture() const { return m_picture.get(); }
 
     bool knownToBeOpaque() const { DCHECK(RuntimeEnabledFeatures::slimmingPaintV2Enabled()); return m_knownToBeOpaque; }
 
     void analyzeForGpuRasterization(SkPictureGpuAnalyzer&) const override;
 
-#if DCHECK_IS_ON()
+#if ENABLE(ASSERT)
     bool equals(const DisplayItem& other) const final;
 #endif
 
 private:
 #ifndef NDEBUG
     void dumpPropertiesAsDebugString(WTF::StringBuilder&) const override;
 #endif
 
     RefPtr<const SkPicture> m_picture;
 
     // True if there are no transparent areas. Only used for SlimmingPaintV2.
     const bool m_knownToBeOpaque;
 };
 
 } // namespace blink
 
 #endif // DrawingDisplayItem_h