Changes look for scrollbars on windows (2)

ui/gfx/nine_image_painter.h

+// Copyright 2014 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_GFX_NINE_IMAGE_PAINTER_H_
+#define UI_GFX_NINE_IMAGE_PAINTER_H_
+
+#include "base/logging.h"
+#include "ui/gfx/gfx_export.h"
+#include "ui/gfx/image/image_skia.h"
+
+namespace gfx {
+
+class Canvas;
+class Insets;
+class Rect;
+
+class GFX_EXPORT NineImagePainter {
+ public:
+  explicit NineImagePainter(const std::vector<ImageSkia>& images);
+  NineImagePainter(const ImageSkia& image, const Insets& insets);
+  ~NineImagePainter();
+
+  bool IsEmpty() const;
+  Size GetMinimumSize() const;
+  void Paint(Canvas* canvas, const Rect& bounds);
+
+ private:
+  // Stretches the given image over the specified canvas area.
+  static void Fill(Canvas* c,
+                   const ImageSkia& i,
+                   int x,
+                   int y,
+                   int w,
+                   int h);
+
+  // Images are numbered as depicted below.
+  //  ____________________
+  // |__i0__|__i1__|__i2__|
+  // |__i3__|__i4__|__i5__|
+  // |__i6__|__i7__|__i8__|
+  ImageSkia images_[9];
+
+  DISALLOW_COPY_AND_ASSIGN(NineImagePainter);
+};
+
+}  // namespace gfx
+
+#endif  // UI_GFX_NINE_IMAGE_PAINTER_H_