Replace ASSERT family with DCHECK and so on in core/dom/.

third_party/WebKit/Source/core/dom/RawDataDocumentParser.h

 /*
  * Copyright (C) 2010 Google, 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 26 matching lines @@
       : DocumentParser(document) {}
 
   void finish() override {
     if (!isStopped())
       document()->finishedParsing();
   }
 
  private:
   void insert(const SegmentedString&) final {}
 
-  void append(const String&) final { ASSERT_NOT_REACHED(); }
+  void append(const String&) final { NOTREACHED(); }
 };
 
 }  // namespace blink
 
 #endif  // RawDataDocumentParser_h