Make ShadowBorder use ShadowValue.

ui/views/shadow_border.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_VIEWS_SHADOW_BORDER_H_
 #define UI_VIEWS_SHADOW_BORDER_H_
 
 #include "third_party/skia/include/core/SkColor.h"
+#include "ui/gfx/shadow_value.h"
 #include "ui/views/border.h"
 #include "ui/views/views_export.h"
 
 namespace views {
 
 // Creates a css box-shadow like border which fades into SK_ColorTRANSPARENT.
 class VIEWS_EXPORT ShadowBorder : public views::Border {
  public:
-  ShadowBorder(int blur,
-               SkColor color,
-               int vertical_offset,
-               int horizontal_offset);
+  explicit ShadowBorder(const gfx::ShadowValue& shadow);
   ~ShadowBorder() override;
 
  protected:
   // Overridden from views::Border:
   void Paint(const views::View& view, gfx::Canvas* canvas) override;
   gfx::Insets GetInsets() const override;
   gfx::Size GetMinimumSize() const override;
 
  private:
-  // Blur amount of the shadow in pixels. For details on how blur is defined see
-  // comments for blur_ in class ShadowValue.
-  const int blur_;
+  // The shadow value to use for this border.
+  const gfx::ShadowValue shadow_value_;
 
-  // Shadow color.
-  const SkColor color_;
-
-  // Number of pixels to shift shadow to bottom.
-  const int vertical_offset_;
-
-  // Number of pixels to shift shadow to right.
-  const int horizontal_offset_;
+  // The insets of this border.
+  const gfx::Insets insets_;
 
   DISALLOW_COPY_AND_ASSIGN(ShadowBorder);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_SHADOW_BORDER_H_