Support ARIB STD B67, aka hybrid-log gamma (HLG) transfer function.

ui/gfx/color_transform_unittest.cc

Index: ui/gfx/color_transform_unittest.cc
diff --git a/ui/gfx/color_transform_unittest.cc b/ui/gfx/color_transform_unittest.cc
index c5295631449d0e4be3f7de36a46c9d90585c9a31..a2567623b30848838e17016650e0458e3692d9bd 100644
--- a/ui/gfx/color_transform_unittest.cc
+++ b/ui/gfx/color_transform_unittest.cc
@@ -33,6 +33,7 @@ ColorSpace::TransferID all_transfers[] = {
     ColorSpace::TransferID::IEC61966_2_4, ColorSpace::TransferID::BT1361_ECG,
     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,