color: Clarify default behaviors

cc/ipc/struct_traits_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/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "cc/input/selection.h"
 #include "cc/ipc/traits_test_service.mojom.h"
 #include "cc/output/copy_output_result.h"
 #include "cc/quads/debug_border_draw_quad.h"
@@ skipping 950 matching lines @@
   const gpu::CommandBufferId command_buffer_id(
       gpu::CommandBufferId::FromUnsafeValue(0xdeadbeef));
   const uint64_t release_count = 0xdeadbeefdeadL;
   const gpu::SyncToken sync_token(command_buffer_namespace, extra_data_field,
                                   command_buffer_id, release_count);
   const uint32_t texture_target = 1337;
   const gfx::Size size_in_pixels(93, 24);
   const bool is_overlay_candidate = true;
   const bool secure_output_only = true;
   const bool nearest_neighbor = true;
-  const gfx::ColorSpace color_space(4, 5, 9, gfx::ColorSpace::RangeID::LIMITED);
+  const gfx::ColorSpace color_space =
+      gfx::ColorSpace::CreateVideo(4, 5, 9, gfx::ColorSpace::RangeID::LIMITED);
 #if defined(OS_ANDROID)
   const bool is_backed_by_surface_texture = true;
   const bool wants_promotion_hint = true;
 #endif
 
   gpu::Mailbox mailbox;
   mailbox.SetName(mailbox_name);
   TextureMailbox input(mailbox, sync_token, texture_target, size_in_pixels,
                        is_overlay_candidate, secure_output_only);
   input.set_nearest_neighbor(nearest_neighbor);
@@ skipping 123 matching lines @@
   EXPECT_EQ(u_plane_resource_id, out_quad->u_plane_resource_id());
   EXPECT_EQ(v_plane_resource_id, out_quad->v_plane_resource_id());
   EXPECT_EQ(a_plane_resource_id, out_quad->a_plane_resource_id());
   EXPECT_EQ(color_space, out_quad->color_space);
   EXPECT_EQ(resource_offset, out_quad->resource_offset);
   EXPECT_EQ(resource_multiplier, out_quad->resource_multiplier);
   EXPECT_EQ(bits_per_channel, out_quad->bits_per_channel);
 }
 
 }  // namespace cc