Factor out common BorderImageLength code in CSSToStyleMap

Source/core/rendering/style/BorderImageLengthBox.h

 /*
  * Copyright (c) 2013, Opera Software ASA. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 23 matching lines @@
 #include "core/rendering/style/BorderImageLength.h"
 
 namespace WebCore {
 
 // Represents a computed border image width or outset.
 //
 // http://www.w3.org/TR/css3-background/#border-image-width
 // http://www.w3.org/TR/css3-background/#border-image-outset
 class BorderImageLengthBox {
 public:
-    BorderImageLengthBox()
+    BorderImageLengthBox(Length length)
+        : m_left(length)
+        , m_right(length)
+        , m_top(length)
+        , m_bottom(length)
     {
     }
 
-    BorderImageLengthBox(Length top, Length right, Length bottom, Length left)
-        : m_left(left)
-        , m_right(right)
-        , m_top(top)
-        , m_bottom(bottom)
+    BorderImageLengthBox(double number)
+        : m_left(number)
+        , m_right(number)
+        , m_top(number)
+        , m_bottom(number)
     {
     }
 
-    BorderImageLengthBox(double top, double right, double bottom, double left)
-        : m_left(left)
-        , m_right(right)
-        , m_top(top)
-        , m_bottom(bottom)
-    {
-    }
-
     BorderImageLengthBox(const BorderImageLength& top, const BorderImageLength& right,
         const BorderImageLength& bottom, const BorderImageLength& left)
         : m_left(left)
         , m_right(right)
         , m_top(top)
         , m_bottom(bottom)
     {
     }
 
     const BorderImageLength& left() const { return m_left; }
     const BorderImageLength& right() const { return m_right; }
     const BorderImageLength& top() const { return m_top; }
     const BorderImageLength& bottom() const { return m_bottom; }
 
-    void setLeft(const BorderImageLength& left) { m_left = left; }
-    void setRight(const BorderImageLength& right) { m_right = right; }
-    void setTop(const BorderImageLength& top) { m_top = top; }
-    void setBottom(const BorderImageLength& bottom) { m_bottom = bottom; }
-
     bool operator==(const BorderImageLengthBox& other) const
     {
         return m_left == other.m_left && m_right == other.m_right
             && m_top == other.m_top && m_bottom == other.m_bottom;
     }
 
     bool operator!=(const BorderImageLengthBox& other) const
     {
         return !(*this == other);
     }
 
     bool nonZero() const
     {
         return !(m_left.isZero() && m_right.isZero() && m_top.isZero() && m_bottom.isZero());
     }
 
 private:
     BorderImageLength m_left;
     BorderImageLength m_right;
     BorderImageLength m_top;
     BorderImageLength m_bottom;
 };
 
 } // namespace WebCore
 
 #endif // BorderImageLengthBox_h