color: Towards ColorTransform optimizations and code generation

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
index 1d99617716e6d7bc5156ca64263a46011b88354d..5368b7a6a7bb956cc0ae6fed292b1b5cf09e2975 100644
--- a/ui/gfx/color_transform.h
+++ b/ui/gfx/color_transform.h
@@ -5,10 +5,7 @@
 #ifndef UI_GFX_COLOR_TRANSFORM_H_
 #define UI_GFX_COLOR_TRANSFORM_H_
 
-#include <memory>
-#include <stdint.h>
-
-#include "build/build_config.h"
+#include "base/macros.h"
 #include "ui/gfx/color_space.h"
 #include "ui/gfx/geometry/point3_f.h"
 #include "ui/gfx/gfx_export.h"
@@ -23,19 +20,23 @@ class GFX_EXPORT ColorTransform {
   // Channel order is XYZ, RGB or YUV.
   typedef Point3F TriStim;
 
-  virtual ~ColorTransform() {}
+  ColorTransform();
+  virtual ~ColorTransform();
 
   // Perform transformation of colors, |colors| is both input and output.
-  virtual void transform(TriStim* colors, size_t num) = 0;
+  virtual void Transform(TriStim* colors, size_t num) = 0;
+
+  virtual size_t NumberOfStepsForTesting() const = 0;
 
   static std::unique_ptr<ColorTransform> NewColorTransform(
       const ColorSpace& from,
       const ColorSpace& to,
       Intent intent);
 
-  static float ToLinearForTesting(ColorSpace::TransferID id, float v);
-  static float FromLinearForTesting(ColorSpace::TransferID id, float v);
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ColorTransform);
 };
+
 }  // namespace gfx
 
 #endif  // UI_GFX_COLOR_TRANSFORM_H_