Allow assertions to be enabled in Blink Release builds.

Source/core/testing/InternalSettings.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  * Copyright (C) 2013 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.
@@ skipping 93 matching lines @@
 }
 #else
 // We can't use RefCountedSupplement because that would try to make InternalSettings RefCounted
 // and InternalSettings is already RefCounted via its base class, InternalSettingsGenerated.
 // Instead, we manually make InternalSettings supplement Page.
 class InternalSettingsWrapper : public Supplement<Page> {
 public:
     explicit InternalSettingsWrapper(Page& page)
         : m_internalSettings(InternalSettings::create(page)) { }
     virtual ~InternalSettingsWrapper() { m_internalSettings->hostDestroyed(); }
-#if ASSERT_ENABLED
+#if ENABLE(ASSERT)
     virtual bool isRefCountedWrapper() const OVERRIDE { return true; }
 #endif
     InternalSettings* internalSettings() const { return m_internalSettings.get(); }
 
 private:
     RefPtr<InternalSettings> m_internalSettings;
 };
 
 InternalSettings* InternalSettings::from(Page& page)
 {
@@ skipping 212 matching lines @@
 void InternalSettings::trace(Visitor* visitor)
 {
     visitor->trace(m_page);
     InternalSettingsGenerated::trace(visitor);
 #if ENABLE(OILPAN)
     HeapSupplement<Page>::trace(visitor);
 #endif
 }
 
 }