[SVG] SVGLength{,List} migration to new SVG property impl.

Source/core/svg/LinearGradientAttributes.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
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef LinearGradientAttributes_h
 #define LinearGradientAttributes_h
 
 #include "core/svg/GradientAttributes.h"
 
 namespace WebCore {
 struct LinearGradientAttributes : GradientAttributes {
     LinearGradientAttributes()
-        : m_x1()
-        , m_y1()
-        , m_x2(LengthModeWidth, "100%")
-        , m_y2()
+        : m_x1(SVGLength::create(LengthModeWidth))
+        , m_y1(SVGLength::create(LengthModeWidth))
+        , m_x2(SVGLength::create(LengthModeWidth))
+        , m_y2(SVGLength::create(LengthModeWidth))
         , m_x1Set(false)
         , m_y1Set(false)
         , m_x2Set(false)
         , m_y2Set(false)
     {
+        m_x2->setValueAsString("100%", ASSERT_NO_EXCEPTION);
     }
 
-    SVGLength x1() const { return m_x1; }
-    SVGLength y1() const { return m_y1; }
-    SVGLength x2() const { return m_x2; }
-    SVGLength y2() const { return m_y2; }
+    SVGLength* x1() const { return m_x1.get(); }
+    SVGLength* y1() const { return m_y1.get(); }
+    SVGLength* x2() const { return m_x2.get(); }
+    SVGLength* y2() const { return m_y2.get(); }
 
-    void setX1(const SVGLength& value) { m_x1 = value; m_x1Set = true; }
-    void setY1(const SVGLength& value) { m_y1 = value; m_y1Set = true; }
-    void setX2(const SVGLength& value) { m_x2 = value; m_x2Set = true; }
-    void setY2(const SVGLength& value) { m_y2 = value; m_y2Set = true; }
+    void setX1(PassRefPtr<SVGLength> value) { m_x1 = value; m_x1Set = true; }
+    void setY1(PassRefPtr<SVGLength> value) { m_y1 = value; m_y1Set = true; }
+    void setX2(PassRefPtr<SVGLength> value) { m_x2 = value; m_x2Set = true; }
+    void setY2(PassRefPtr<SVGLength> value) { m_y2 = value; m_y2Set = true; }
 
     bool hasX1() const { return m_x1Set; }
     bool hasY1() const { return m_y1Set; }
     bool hasX2() const { return m_x2Set; }
     bool hasY2() const { return m_y2Set; }
 
 private:
     // Properties
-    SVGLength m_x1;
-    SVGLength m_y1;
-    SVGLength m_x2;
-    SVGLength m_y2;
+    RefPtr<SVGLength> m_x1;
+    RefPtr<SVGLength> m_y1;
+    RefPtr<SVGLength> m_x2;
+    RefPtr<SVGLength> m_y2;
 
     // Property states
     bool m_x1Set : 1;
     bool m_y1Set : 1;
     bool m_x2Set : 1;
     bool m_y2Set : 1;
 };
 
 } // namespace WebCore
 
 #endif
 
 // vim:ts=4:noet