color: Clarify default behaviors

ui/gfx/color_transform_unittest.cc

 // Copyright (c) 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/color_transform.h"
 #include "ui/gfx/icc_profile.h"
 #include "ui/gfx/test/icc_profiles.h"
@@ skipping 21 matching lines @@
     ColorSpace::TransferID::IEC61966_2_1, ColorSpace::TransferID::BT2020_10,
     ColorSpace::TransferID::BT2020_12,    ColorSpace::TransferID::SMPTEST2084,
     ColorSpace::TransferID::ARIB_STD_B67,
     // This one is weird as the non-linear numbers are not between 0 and 1.
     // TODO(hubbe): Test this separately.
     //  ColorSpace::TransferID::SMPTEST428_1,
 };
 
 ColorSpace::MatrixID all_matrices[] = {
     ColorSpace::MatrixID::RGB, ColorSpace::MatrixID::BT709,
-    ColorSpace::MatrixID::UNSPECIFIED, ColorSpace::MatrixID::RESERVED,
     ColorSpace::MatrixID::FCC, ColorSpace::MatrixID::BT470BG,
     ColorSpace::MatrixID::SMPTE170M, ColorSpace::MatrixID::SMPTE240M,
 
     // YCOCG produces lots of negative values which isn't compatible with many
     // transfer functions.
     // TODO(hubbe): Test this separately.
     // ColorSpace::MatrixID::YCOCG,
     ColorSpace::MatrixID::BT2020_NCL, ColorSpace::MatrixID::BT2020_CL,
     ColorSpace::MatrixID::YDZDX,
 };
 
-ColorSpace::RangeID all_ranges[] = {ColorSpace::RangeID::UNSPECIFIED,
-                                    ColorSpace::RangeID::FULL,
+ColorSpace::RangeID all_ranges[] = {ColorSpace::RangeID::FULL,
                                     ColorSpace::RangeID::LIMITED,
                                     ColorSpace::RangeID::DERIVED};
 
 ColorTransform::Intent intents[] = {ColorTransform::Intent::INTENT_ABSOLUTE,
                                     ColorTransform::Intent::TEST_NO_OPT};
 
 TEST(SimpleColorSpace, BT709toSRGB) {
   ColorSpace bt709 = ColorSpace::CreateREC709();
   ColorSpace sRGB = ColorSpace::CreateSRGB();
   std::unique_ptr<ColorTransform> t(ColorTransform::NewColorTransform(
@@ skipping 254 matching lines @@
 
 INSTANTIATE_TEST_CASE_P(
     C,
     ColorSpaceTest,
     testing::Combine(testing::ValuesIn(all_primaries),
                      testing::Values(ColorSpace::TransferID::BT709),
                      testing::ValuesIn(all_matrices),
                      testing::ValuesIn(all_ranges),
                      testing::ValuesIn(intents)));
 }  // namespace