Use gfx::ColorSpace instead of SkColorSpace in Blink

ui/gfx/color_space.h

 // Copyright (c) 2012 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_SPACE_H_
 #define UI_GFX_COLOR_SPACE_H_
 
 #include <stdint.h>
 
 #include "base/gtest_prod_util.h"
@@ skipping 32 matching lines @@
     BT2020 = 9,
     SMPTEST428_1 = 10,
     SMPTEST431_2 = 11,
     SMPTEST432_1 = 12,
 
     LAST_STANDARD_VALUE = SMPTEST432_1,
 
     // Chrome-specific values start at 1000.
     UNKNOWN = 1000,
     XYZ_D50,
+    ADOBE_RGB,
     CUSTOM,
     LAST = CUSTOM
   };
 
   enum class TransferID : uint16_t {
     // The first 0-255 values should match the H264 specification (see Table E-4
     // Transfer Characteristics in https://www.itu.int/rec/T-REC-H.264/en).
     RESERVED0 = 0,
     BT709 = 1,
     UNSPECIFIED = 2,
@@ skipping 70 matching lines @@
     FULL = 2,
 
     // Range is defined by TransferID/MatrixID.
     DERIVED = 3,
 
     LAST = DERIVED
   };
 
   ColorSpace();
   ColorSpace(PrimaryID primaries,
+             TransferID transfer);
+  ColorSpace(PrimaryID primaries,
              TransferID transfer,
              MatrixID matrix,
              RangeID full_range);
   ColorSpace(const ColorSpace& other);
   ColorSpace(int primaries, int transfer, int matrix, RangeID full_range);
   ~ColorSpace();
 
   static PrimaryID PrimaryIDFromInt(int primary_id);
   static TransferID TransferIDFromInt(int transfer_id);
   static MatrixID MatrixIDFromInt(int matrix_id);
 
+  // Returns true if this is not the default-constructor object.
+  bool IsValid() const;
+
   static ColorSpace CreateSRGB();
   static ColorSpace CreateCustom(const SkMatrix44& to_XYZD50,
                                  const SkColorSpaceTransferFn& fn);
   // scRGB is like RGB, but linear and values outside of 0-1 are allowed.
   // scRGB is normally used with fp16 textures.
   static ColorSpace CreateSCRGBLinear();
   static ColorSpace CreateXYZD50();
 
   // TODO: Remove these, and replace with more generic constructors.
   static ColorSpace CreateJpeg();
   static ColorSpace CreateREC601();
   static ColorSpace CreateREC709();
 
   bool operator==(const ColorSpace& other) const;
   bool operator!=(const ColorSpace& other) const;
   bool operator<(const ColorSpace& other) const;
 
   bool IsHDR() const;
 
-  // Note that this may return nullptr.
+  // This will return nullptr for non-RGB spaces, spaces with non-FULL
+  // range, and unspecified spaces.
   sk_sp<SkColorSpace> ToSkColorSpace() const;
-  static ColorSpace FromSkColorSpace(const sk_sp<SkColorSpace>& sk_color_space);
 
   void GetPrimaryMatrix(SkMatrix44* to_XYZD50) const;
   bool GetTransferFunction(SkColorSpaceTransferFn* fn) const;
   bool GetInverseTransferFunction(SkColorSpaceTransferFn* fn) const;
 
  private:
   PrimaryID primaries_ = PrimaryID::UNSPECIFIED;
   TransferID transfer_ = TransferID::UNSPECIFIED;
   MatrixID matrix_ = MatrixID::UNSPECIFIED;
   RangeID range_ = RangeID::LIMITED;
@@ skipping 14 matching lines @@
   friend class ICCProfile;
   friend class ColorSpaceToColorSpaceTransform;
   friend class ColorSpaceWin;
   friend struct IPC::ParamTraits<gfx::ColorSpace>;
   FRIEND_TEST_ALL_PREFIXES(SimpleColorSpace, GetColorSpace);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GFX_COLOR_SPACE_H_