Replace ASSERT, ASSERT_NOT_REACHED, and RELEASE_ASSERT in core/css/

third_party/WebKit/Source/core/css/StyleSheetContents.h

 /*
  * (C) 1999-2003 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All rights
  * reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 156 matching lines @@
   bool isReferencedFromResource() const { return m_referencedFromResource; }
   void setReferencedFromResource(CSSStyleSheetResource*);
   void clearReferencedFromResource();
 
   void setHasMediaQueries();
   bool hasMediaQueries() const { return m_hasMediaQueries; }
 
   bool didLoadErrorOccur() const { return m_didLoadErrorOccur; }
 
   RuleSet& ruleSet() {
-    ASSERT(m_ruleSet);
+    DCHECK(m_ruleSet);
     return *m_ruleSet.get();
   }
   RuleSet& ensureRuleSet(const MediaQueryEvaluator&, AddRuleFlags);
   void clearRuleSet();
 
   String sourceMapURL() const { return m_sourceMapURL; }
 
   DECLARE_TRACE();
 
  private:
@@ skipping 34 matching lines @@
   HeapHashSet<WeakMember<CSSStyleSheet>> m_loadingClients;
   HeapHashSet<WeakMember<CSSStyleSheet>> m_completedClients;
 
   Member<RuleSet> m_ruleSet;
   String m_sourceMapURL;
 };
 
 }  // namespace blink
 
 #endif