Remove some unused functions in core

Source/core/dom/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 78 matching lines @@
     return match ? trueInstance : falseInstance;
 }
 
 inline DocumentMarkerTextMatch* toDocumentMarkerTextMatch(DocumentMarkerDetails* details)
 {
     if (details && details->isTextMatch())
         return static_cast<DocumentMarkerTextMatch*>(details);
     return 0;
 }
 
-
-DocumentMarker::DocumentMarker()
-    : m_type(Spelling)
-    , m_startOffset(0)
-    , m_endOffset(0)
-    , m_hash(0)
-{
-}
-
 DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset, const String& description, uint32_t hash)
     : m_type(type)
     , m_startOffset(startOffset)
     , m_endOffset(endOffset)
     , m_details(description.isEmpty() ? nullptr : DocumentMarkerDescription::create(description))
     , m_hash(hash)
 {
 }
 
 DocumentMarker::DocumentMarker(unsigned startOffset, unsigned endOffset, bool activeMatch)
     : m_type(DocumentMarker::TextMatch)
     , m_startOffset(startOffset)
     , m_endOffset(endOffset)
     , m_details(DocumentMarkerTextMatch::instanceFor(activeMatch))
     , m_hash(0)
 {
 }
 
-DocumentMarker::DocumentMarker(MarkerType type, unsigned startOffset, unsigned endOffset, PassRefPtrWillBeRawPtr<DocumentMarkerDetails> details)
-    : m_type(type)
-    , m_startOffset(startOffset)
-    , m_endOffset(endOffset)
-    , m_details(details)
-    , m_hash(0)
-{
-}
-
 DocumentMarker::DocumentMarker(const DocumentMarker& marker)
     : m_type(marker.type())
     , m_startOffset(marker.startOffset())
     , m_endOffset(marker.endOffset())
     , m_details(marker.details())
     , m_hash(marker.hash())
 {
 }
 
 void DocumentMarker::shiftOffsets(int delta)
@@ skipping 20 matching lines @@
         return details->activeMatch();
     return false;
 }
 
 void DocumentMarker::trace(Visitor* visitor)
 {
     visitor->trace(m_details);
 }
 
 } // namespace blink