ColorTransform, transforms colors from one color space to another

ui/gfx/color_transform.h

Index: ui/gfx/color_transform.h
diff --git a/ui/gfx/color_transform.h b/ui/gfx/color_transform.h
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+// Copyright (c) 2016 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_COLOR_TRANSFORM_H_
+#define UI_GFX_COLOR_TRANSFORM_H_
+
+#include <memory>
+#include <stdint.h>
+
+#include "build/build_config.h"
+#include "ui/gfx/geometry/point3_f.h"
+#include "ui/gfx/gfx_export.h"
+
+namespace gfx {
+
+class ColorSpace;
+
+class GFX_EXPORT ColorTransform {
+ public:
+  enum class Intent { ABSOLUTE, PERCEPTUAL };
+
+  // TriStimulus is a color coordinate in any color space.
+  // Channel order is XYZ, RGB or YUV.
+  typedef Point3F TriStim;
+
+  // Perform transformation of colors, |colors| is both input and output.
+  virtual void transform(TriStim* colors, size_t num) = 0;
+
+  static std::unique_ptr<ColorTransform> NewColorTransform(
+      const ColorSpace& from,
+      const ColorSpace& to,
+      Intent intent);
+};
+}  // namespace gfx
+
+#endif  // UI_GFX_COLOR_TRANSFORM_H_