Remove some unused functions in core

Source/core/dom/DocumentMarkerController.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 687 matching lines @@
 
         (*marker)->setActiveMatch(active);
         docDirty = true;
     }
 
     // repaint the affected node
     if (docDirty && node->renderer())
         node->renderer()->setShouldDoFullPaintInvalidation();
 }
 
-bool DocumentMarkerController::hasMarkers(Range* range, DocumentMarker::MarkerTypes markerTypes)
-{
-    if (!possiblyHasMarkers(markerTypes))
-        return false;
-    ASSERT(!m_markers.isEmpty());
-
-    Node* startContainer = range->startContainer();
-    ASSERT(startContainer);
-    Node* endContainer = range->endContainer();
-    ASSERT(endContainer);
-
-    Node* pastLastNode = range->pastLastNode();
-    for (Node* node = range->firstNode(); node != pastLastNode; node = NodeTraversal::next(*node)) {
-        for (const DocumentMarker* marker : markersFor(node)) {
-            if (!markerTypes.contains(marker->type()))
-                continue;
-            if (node == startContainer && marker->endOffset() <= static_cast<unsigned>(range->startOffset()))
-                continue;
-            if (node == endContainer && marker->startOffset() >= static_cast<unsigned>(range->endOffset()))
-                continue;
-            return true;
-        }
-    }
-    return false;
-}
-
 #ifndef NDEBUG
 void DocumentMarkerController::showMarkers() const
 {
     fprintf(stderr, "%d nodes have markers:\n", m_markers.size());
     MarkerMap::const_iterator end = m_markers.end();
     for (MarkerMap::const_iterator nodeIterator = m_markers.begin(); nodeIterator != end; ++nodeIterator) {
         const Node* node = nodeIterator->key;
         fprintf(stderr, "%p", node);
         MarkerLists* markers = m_markers.get(node);
         for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
@@ skipping 11 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 void showDocumentMarkers(const blink::DocumentMarkerController* controller)
 {
     if (controller)
         controller->showMarkers();
 }
 #endif