Refactor DocumentMarkerController

third_party/WebKit/Source/core/editing/markers/DocumentMarker.cpp

 /*
  * Copyright (C) 2011 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 124 matching lines @@
 
 DocumentMarker::DocumentMarker(MarkerType type,
                                unsigned startOffset,
                                unsigned endOffset,
                                const String& description)
     : m_type(type),
       m_startOffset(startOffset),
       m_endOffset(endOffset),
       m_details(description.isEmpty()
                     ? nullptr
-                    : DocumentMarkerDescription::create(description)) {}
+                    : DocumentMarkerDescription::create(description)) {
+  DCHECK(type != DocumentMarker::TextMatch);
+}
 
 DocumentMarker::DocumentMarker(unsigned startOffset,
                                unsigned endOffset,
                                bool activeMatch)
     : m_type(DocumentMarker::TextMatch),
       m_startOffset(startOffset),
       m_endOffset(endOffset),
       m_details(DocumentMarkerTextMatch::create(activeMatch)) {}
 
 DocumentMarker::DocumentMarker(unsigned startOffset,
@@ skipping 102 matching lines @@
           toTextCompositionMarkerDetails(m_details.get()))
     return details->backgroundColor();
   return Color::transparent;
 }
 
 DEFINE_TRACE(DocumentMarker) {
   visitor->trace(m_details);
 }
 
 }  // namespace blink