HDR preparations

ui/gfx/color_space.cc

Index: ui/gfx/color_space.cc
diff --git a/ui/gfx/color_space.cc b/ui/gfx/color_space.cc
index 8d3b4c19608ae85bba16f7a229102f41137a9b9c..2bf317bcecb7ec8db177ad8da6c18507680c4e6a 100644
--- a/ui/gfx/color_space.cc
+++ b/ui/gfx/color_space.cc
@@ -86,6 +86,12 @@ ColorSpace ColorSpace::CreateSRGB() {
   return result;
 }
 
+// static
+ColorSpace ColorSpace::CreateSCRGBLinear() {
+  return ColorSpace(PrimaryID::BT709, TransferID::LINEAR, MatrixID::RGB,
+                    RangeID::FULL);
+}
+
 // Static
 ColorSpace ColorSpace::CreateXYZD50() {
   return ColorSpace(PrimaryID::XYZ_D50, TransferID::LINEAR, MatrixID::RGB,
@@ -121,6 +127,11 @@ bool ColorSpace::operator==(const ColorSpace& other) const {
   return true;
 }
 
+bool ColorSpace::IsHDR() const {
+  return transfer_ == TransferID::SMPTEST2084 ||
+         transfer_ == TransferID::ARIB_STD_B67;
+}
+
 bool ColorSpace::operator!=(const ColorSpace& other) const {
   return !(*this == other);
 }