ASSERT -> DCHECK in core/editing.

third_party/WebKit/Source/core/editing/spellcheck/SpellChecker.h

 /*
  * Copyright (C) 2006, 2007, 2008 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 85 matching lines @@
     //
     // Hence allow the leak detector to effectively stop the spell checker to
     // ensure leak reporting stability.
     void prepareForLeakDetection();
 
 private:
     explicit SpellChecker(LocalFrame&);
 
     LocalFrame& frame() const
     {
-        ASSERT(m_frame);
+        DCHECK(m_frame);
         return *m_frame;
     }
 
     bool markMisspellingsOrBadGrammar(const VisibleSelection&, bool checkSpelling);
     TextCheckingTypeMask resolveTextCheckingTypeMask(TextCheckingTypeMask);
 
     void removeMarkers(const VisibleSelection&, DocumentMarker::MarkerTypes);
     bool unifiedTextCheckerEnabled() const;
 
     void chunkAndMarkAllMisspellingsAndBadGrammar(TextCheckingTypeMask textCheckingOptions, const TextCheckingParagraph& fullParagraphToCheck);
 
     Member<LocalFrame> m_frame;
     const Member<SpellCheckRequester> m_spellCheckRequester;
 };
 
 } // namespace blink
 
 #endif // SpellChecker_h