color: Use named gamuts in ToSkColorSpace

ui/gfx/color_space_unittest.cc

 // 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.
 
 #include <cmath>
 
 #include "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/color_space.h"
 #include "ui/gfx/skia_color_space_util.h"
@@ skipping 154 matching lines @@
 
     for (size_t i = 0; i < x.size(); ++i) {
       float fn_approx_of_x = SkTransferFnEval(fn_approx, x[i]);
       EXPECT_NEAR(t[i], fn_approx_of_x, expected_error);
       if (std::abs(t[i] - fn_approx_of_x) > expected_error)
         break;
     }
   }
 }
 
+TEST(ColorSpace, ToSkColorSpace) {
+  const size_t kNumTests = 4;
+  ColorSpace color_spaces[kNumTests] = {
+      ColorSpace(ColorSpace::PrimaryID::BT709,
+                 ColorSpace::TransferID::IEC61966_2_1),
+      ColorSpace(ColorSpace::PrimaryID::ADOBE_RGB,
+                 ColorSpace::TransferID::IEC61966_2_1),
+      ColorSpace(ColorSpace::PrimaryID::SMPTEST432_1,
+                 ColorSpace::TransferID::LINEAR),
+      ColorSpace(ColorSpace::PrimaryID::BT2020,
+                 ColorSpace::TransferID::IEC61966_2_1),
+  };
+  sk_sp<SkColorSpace> sk_color_spaces[kNumTests] = {
+      SkColorSpace::MakeSRGB(),
+      SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
+                            SkColorSpace::kAdobeRGB_Gamut),
+      SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma,
+                            SkColorSpace::kDCIP3_D65_Gamut),
+      SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma,
+                            SkColorSpace::kRec2020_Gamut),
+  };
+  for (size_t i = 0; i < kNumTests; ++i) {
+    EXPECT_TRUE(SkColorSpace::Equals(color_spaces[i].ToSkColorSpace().get(),
+                                     sk_color_spaces[i].get()))
+        << " on iteration i = " << i;
+  }
+}
+
 }  // namespace
 }  // namespace gfx