Make SVGLengthMode an enum class

Source/core/svg/PatternAttributes.h

 /*
  * Copyright (C) 2006 Nikolas Zimmermann <zimmermann@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 15 matching lines @@
 #include "platform/transforms/AffineTransform.h"
 
 namespace blink {
 
 class SVGPatternElement;
 
 class PatternAttributes final {
     DISALLOW_ALLOCATION();
 public:
     PatternAttributes()
-        : m_x(SVGLength::create(LengthModeWidth))
-        , m_y(SVGLength::create(LengthModeHeight))
-        , m_width(SVGLength::create(LengthModeWidth))
-        , m_height(SVGLength::create(LengthModeHeight))
+        : m_x(SVGLength::create(SVGLengthMode::Width))
+        , m_y(SVGLength::create(SVGLengthMode::Height))
+        , m_width(SVGLength::create(SVGLengthMode::Width))
+        , m_height(SVGLength::create(SVGLengthMode::Height))
         , m_viewBox()
         , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
         , m_patternUnits(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
         , m_patternContentUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
         , m_patternContentElement(nullptr)
         , m_xSet(false)
         , m_ySet(false)
         , m_widthSet(false)
         , m_heightSet(false)
         , m_viewBoxSet(false)
@@ skipping 141 matching lines @@
     {
     }
 
     PatternAttributes m_attributes;
 };
 #endif
 
 } // namespace blink
 
 #endif // PatternAttributes_h