Allow assertions to be enabled in Blink Release builds.

Source/platform/graphics/GraphicsLayer.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. 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 254 matching lines @@
     friend class blink::GraphicsLayerFactoryChromium;
 
     // Exposed for tests.
     virtual blink::WebLayer* contentsLayer() const { return m_contentsLayer; }
 
 private:
     // Adds a child without calling updateChildList(), so that adding children
     // can be batched before updating.
     void addChildInternal(GraphicsLayer*);
 
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
     bool hasAncestor(GraphicsLayer*) const;
 #endif
 
     // This method is used by platform GraphicsLayer classes to clear the filters
     // when compositing is not done in hardware. It is not virtual, so the caller
     // needs to notifiy the change to the platform layer as needed.
     void clearFilters() { m_filters.clear(); }
 
     void setReplicatedLayer(GraphicsLayer* layer) { m_replicatedLayer = layer; }
 
@@ skipping 78 matching lines @@
 };
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void PLATFORM_EXPORT showGraphicsLayerTree(const WebCore::GraphicsLayer*);
 #endif
 
 #endif // GraphicsLayer_h