[SVG2] Add support for marker orient="auto-start-reverse".

Source/core/rendering/svg/RenderSVGShape.cpp

 /*
  * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2005, 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  * Copyright (C) 2009 Jeff Schiller <codedread@gmail.com>
  * Copyright (C) 2011 Renata Hodovan <reni@webkit.org>
  * Copyright (C) 2011 University of Szeged
@@ skipping 434 matching lines @@
 
 void RenderSVGShape::processMarkerPositions()
 {
     m_markerPositions.clear();
 
     if (!shouldGenerateMarkerPositions())
         return;
 
     ASSERT(m_path);
 
-    SVGMarkerData markerData(m_markerPositions);
+    SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(this);
+    if (!resources)

[fs, 2014/09/09 14:24:49]

Nit: ASSERT-ing this should suffice (shouldGenerateMarkerPositions already
checks this).

+        return;
+
+    RenderSVGResourceMarker* markerStart = resources->markerStart();
+
+    SVGMarkerData markerData(m_markerPositions, markerStart ? markerStart->orientType() == SVGMarkerOrientAutoStartReverse : false);
     m_path->apply(&markerData, SVGMarkerData::updateFromPathElement);
     markerData.pathIsDone();
 }
 
 }