Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/platform/graphics/GraphicsLayerClient.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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 71 matching lines @@
   virtual bool needsRepaint(const GraphicsLayer&) const = 0;
   virtual void paintContents(const GraphicsLayer*,
                              GraphicsContext&,
                              GraphicsLayerPaintingPhase,
                              const IntRect& interestRect) const = 0;
 
   virtual bool isTrackingRasterInvalidations() const { return false; }
 
   virtual String debugName(const GraphicsLayer*) const = 0;
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   // CompositedLayerMapping overrides this to verify that it is not
   // currently painting contents. An ASSERT fails, if it is.
   // This is executed in GraphicsLayer construction and destruction
   // to verify that we don't create or destroy GraphicsLayers
   // while painting.
   virtual void verifyNotPainting() {}
 #endif
 };
 
 }  // namespace blink
 
 #endif  // GraphicsLayerClient_h