color: Towards ColorTransform optimizations and code generation

ui/gfx/skia_color_space_util.h

Index: ui/gfx/skia_color_space_util.h
diff --git a/ui/gfx/skia_color_space_util.h b/ui/gfx/skia_color_space_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..29dbb00be93b52d029357a170779af3bc1e5f2dd
--- /dev/null
+++ b/ui/gfx/skia_color_space_util.h
@@ -0,0 +1,22 @@
+// Copyright 2017 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_SKIA_COLOR_SPACE_UTIL_H_
+#define UI_GFX_SKIA_COLOR_SPACE_UTIL_H_
+
+#include "third_party/skia/include/core/SkColorSpace.h"
+#include "ui/gfx/gfx_export.h"
+
+namespace gfx {
+
+float GFX_EXPORT EvalSkTransferFn(const SkColorSpaceTransferFn& fn, float x);
+
+SkColorSpaceTransferFn GFX_EXPORT
+SkTransferFnInverse(const SkColorSpaceTransferFn& fn);
+
+bool GFX_EXPORT SkMatrixIsApproximatelyIdentity(const SkMatrix44& m);
+
+}  // namespace gfx
+
+#endif  // UI_GFX_SKIA_COLOR_SPACE_UTIL_H_