Consolidate canvas color params into a single class

third_party/WebKit/Source/platform/graphics/CanvasColorParams.h

Index: third_party/WebKit/Source/platform/graphics/CanvasColorParams.h
diff --git a/third_party/WebKit/Source/platform/graphics/CanvasColorParams.h b/third_party/WebKit/Source/platform/graphics/CanvasColorParams.h
new file mode 100644
index 0000000000000000000000000000000000000000..daf034af488f2357efa27308fe6833a770fc0c95
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/CanvasColorParams.h
@@ -0,0 +1,59 @@
+// 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 CanvasColorParams_h
+#define CanvasColorParams_h
+
+#include "platform/PlatformExport.h"
+#include "third_party/skia/include/core/SkColorSpace.h"
+#include "third_party/skia/include/core/SkImageInfo.h"
+
+namespace gfx {
+class ColorSpace;
+}
+
+namespace blink {
+
+enum CanvasColorSpace {
+  kLegacyCanvasColorSpace,
+  kSRGBCanvasColorSpace,
+  kRec2020CanvasColorSpace,
+  kP3CanvasColorSpace,
+};
+
+enum CanvasPixelFormat {
+  kRGBA8CanvasPixelFormat,
+  kRGB10A2CanvasPixelFormat,
+  kRGBA12CanvasPixelFormat,
+  kF16CanvasPixelFormat,
+};
+
+class PLATFORM_EXPORT CanvasColorParams {
+ public:
+  CanvasColorParams(CanvasColorSpace, CanvasPixelFormat);
+  CanvasColorSpace color_space() const { return color_space_; }
+  CanvasPixelFormat pixel_format() const { return pixel_format_; }
+
+  // The SkColorSpace to use in the SkImageInfo for allocated SkSurfaces. This
+  // is nullptr in legacy rendering mode.
+  sk_sp<SkColorSpace> GetSkColorSpaceForSkSurfaces() const;
+
+  // The pixel format to use for allocating SkSurfaces.
+  SkColorType GetSkColorType() const;
+
+  // The color space to use for compositing.
+  gfx::ColorSpace GetGfxColorSpace() const;
+
+  // This matches CanvasRenderingContext::LinearPixelMath, and is true only when
+  // the pixel format is half-float linear.
+  bool LinearPixelMath() const;
+
+ private:
+  CanvasColorSpace color_space_ = kLegacyCanvasColorSpace;
+  CanvasPixelFormat pixel_format_ = kRGBA8CanvasPixelFormat;
+};
+
+}  // namespace blink
+
+#endif  // CanvasColorParams_h