color: Use SkColorSpaceXform instead of QCMS for LUTs

ui/gfx/icc_profile_unittest.cc

 // Copyright 2016 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 "base/logging.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/color_space.h"
 #include "ui/gfx/icc_profile.h"
 #include "ui/gfx/test/icc_profiles.h"
 
@@ skipping 75 matching lines @@
 
   ICCProfile accurate_color_space;
   EXPECT_TRUE(accurate.GetColorSpace().GetICCProfile(&accurate_color_space));
   EXPECT_EQ(accurate_color_space, accurate);
 
   ICCProfile accurate_parametric_color_space;
   EXPECT_TRUE(accurate.GetParametricColorSpace().GetICCProfile(
       &accurate_parametric_color_space));
   EXPECT_EQ(accurate_parametric_color_space, accurate);
 
-  // This ICC profile has only an A2B representation. For now, this means that
-  // the parametric representation will be sRGB. We will eventually want to get
-  // some sense of the gamut.
+  // This ICC profile has only an A2B representation. We cannot create an
+  // SkColorSpaceXform to A2B only ICC profiles, so this should be marked
+  // as invalid.
   ICCProfile a2b = ICCProfileForTestingA2BOnly();
-  EXPECT_TRUE(a2b.GetColorSpace().IsValid());
-  EXPECT_NE(a2b.GetColorSpace(), a2b.GetParametricColorSpace());
-  EXPECT_EQ(ColorSpace::CreateSRGB(), a2b.GetParametricColorSpace());
+  EXPECT_FALSE(a2b.GetColorSpace().IsValid());
 }
 
 TEST(ICCProfile, GarbageData) {
   std::vector<char> bad_data(10 * 1024);
   const char* bad_data_string = "deadbeef";
   for (size_t i = 0; i < bad_data.size(); ++i)
     bad_data[i] = bad_data_string[i % 8];
   ICCProfile garbage_profile =
       ICCProfile::FromData(bad_data.data(), bad_data.size());
   EXPECT_FALSE(garbage_profile.IsValid());
   EXPECT_FALSE(garbage_profile.GetColorSpace().IsValid());
   EXPECT_FALSE(garbage_profile.GetParametricColorSpace().IsValid());
 
   ICCProfile default_ctor_profile;
   EXPECT_FALSE(default_ctor_profile.IsValid());
   EXPECT_FALSE(default_ctor_profile.GetColorSpace().IsValid());
   EXPECT_FALSE(default_ctor_profile.GetParametricColorSpace().IsValid());
 }
 
 }  // namespace gfx