Don't use a magic value for 'auto' oriented <marker>s

third_party/WebKit/Source/core/layout/svg/SVGLayoutTreeAsText.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2009 Apple Inc. All rights reserved.
  *           (C) 2005 Rob Buis <buis@kde.org>
  *           (C) 2006 Alexander Kellett <lypanov@kde.org>
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 501 matching lines @@
         if (FilterEffect* lastEffect = builder.lastEffect())
             lastEffect->externalRepresentation(ts, indent + 1);
     } else if (resource->resourceType() == ClipperResourceType) {
         writeNameValuePair(ts, "clipPathUnits", toLayoutSVGResourceClipper(resource)->clipPathUnits());
         ts << "\n";
     } else if (resource->resourceType() == MarkerResourceType) {
         LayoutSVGResourceMarker* marker = toLayoutSVGResourceMarker(resource);
         writeNameValuePair(ts, "markerUnits", marker->markerUnits());
         ts << " [ref at " << marker->referencePoint() << "]";
         ts << " [angle=";
-        if (marker->angle() == -1)
+        if (marker->orientType() != SVGMarkerOrientAngle)
             ts << marker->orientType() << "]\n";
         else
             ts << marker->angle() << "]\n";
     } else if (resource->resourceType() == PatternResourceType) {
         LayoutSVGResourcePattern* pattern = static_cast<LayoutSVGResourcePattern*>(resource);
 
         // Dump final results that are used for layout. No use in asking SVGPatternElement for its patternUnits(), as it may
         // link to other patterns using xlink:href, we need to build the full inheritance chain, aka. collectPatternProperties()
         PatternAttributes attributes;
         toSVGPatternElement(pattern->element())->collectPatternAttributes(attributes);
@@ skipping 132 matching lines @@
             ts << " ";
             writeNameAndQuotedValue(ts, "filter", svgStyle.filterResource());
             ts << " ";
             writeStandardPrefix(ts, *filter, 0);
             ts << " " << filter->resourceBoundingBox(&layoutObject) << "\n";
         }
     }
 }
 
 } // namespace blink