color: Always use parametric color spaces for raster

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 <ostream>
 
@@ skipping 24 matching lines @@
     BT470BG,
     SMPTE170M,
     SMPTE240M,
     FILM,
     BT2020,
     SMPTEST428_1,
     SMPTEST431_2,
     SMPTEST432_1,
     XYZ_D50,
     ADOBE_RGB,
+    // Primaries defined by the primary matrix |custom_primary_matrix_|.
     CUSTOM,
-    LAST = CUSTOM
+    // For color spaces defined by an ICC profile which cannot be represented
+    // parametrically. Any ColorTransform using this color space will use the
+    // ICC profile directly to compute a transform LUT.
+    ICC_BASED,
+    LAST = ICC_BASED,
   };
 
   enum class TransferID : uint16_t {
     INVALID,
     BT709,
     GAMMA22,
     GAMMA24,
     GAMMA28,
     SMPTE170M,
     SMPTE240M,
@@ skipping 10 matching lines @@
     ARIB_STD_B67,  // AKA hybrid-log gamma, HLG.
     // This is an ad-hoc transfer function that decodes SMPTE 2084 content
     // into a [0, 1] range more or less suitable for viewing on a non-hdr
     // display.
     SMPTEST2084_NON_HDR,
     // The same as IEC61966_2_1 on the interval [0, 1], with the nonlinear
     // segment continuing beyond 1 and point symmetry defining values below 0.
     IEC61966_2_1_HDR,
     // The same as LINEAR but is defined for all real values.
     LINEAR_HDR,
+    // A parametric transfer function defined by |custom_transfer_params_|.
     CUSTOM,
-    LAST = CUSTOM,
+    // See PrimaryID::ICC_BASED.
+    ICC_BASED,
+    LAST = ICC_BASED,
   };
 
   enum class MatrixID : int16_t {
     INVALID,
     RGB,
     BT709,
     FCC,
     BT470BG,
     SMPTE170M,
     SMPTE240M,
@@ skipping 116 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(SimpleColorSpace, GetColorSpace);
 };
 
 // Stream operator so ColorSpace can be used in assertion statements.
 GFX_EXPORT std::ostream& operator<<(std::ostream& out,
                                     const ColorSpace& color_space);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_COLOR_SPACE_H_