Chrome Version       : 65.0.3294.5
OS Version: OS X 10.12.6

I noticed one in ui/accelerated_widget_mac/ca_renderer_layer_tree.mm

mac_util.mm has


CGColorSpaceRef GetSRGBColorSpace() {
  // Leaked.  That's OK, it's scoped to the lifetime of the application.
  static CGColorSpaceRef g_color_space_sRGB =
      CGColorSpaceCreateWithName(kCGColorSpaceSRGB);
  DLOG_IF(ERROR, !g_color_space_sRGB) << "Couldn't get the sRGB color space";
  return g_color_space_sRGB;
}


I dunno what the performance cost of CGColorSpaceCreateWithName, but if we have GetSRGBColorSpace() I guess we should use it /shruggie