Make it possible to override the tickmarks for a WebFrame.

Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 2316 matching lines @@
             m_horizontalBarDamage = dirtyRect;
             m_hasHorizontalBarDamage = true;
         }
     } else {
         invalidateRect(dirtyRect);
     }
 }
 
 void FrameView::getTickmarks(Vector<IntRect>& tickmarks) const
 {
-    tickmarks = frame().document()->markers().renderedRectsForMarkers(DocumentMarker::TextMatch);
+    if (!m_tickmarks.isEmpty())
+        tickmarks = m_tickmarks;
+    else
+        tickmarks = frame().document()->markers().renderedRectsForMarkers(DocumentMarker::TextMatch);
 }
 
 IntRect FrameView::windowResizerRect() const
 {
     Page* page = frame().page();
     if (!page)
         return IntRect();
     return page->chrome().windowResizerRect();
 }
 
@@ skipping 865 matching lines @@
 void FrameView::willRemoveScrollbar(Scrollbar* scrollbar, ScrollbarOrientation orientation)
 {
     ScrollableArea::willRemoveScrollbar(scrollbar, orientation);
     if (AXObjectCache* cache = axObjectCache()) {
         cache->remove(scrollbar);
         cache->handleScrollbarUpdate(this);
     }
 }
 
 } // namespace WebCore