propagate display color space changes

ui/display/display_change_notifier.cc

Index: ui/display/display_change_notifier.cc
diff --git a/ui/display/display_change_notifier.cc b/ui/display/display_change_notifier.cc
index 626c86eee49b716974d2b5078119eaa401add5cd..3a5cfd0c8308540648405e70630b3a41a7c76a49 100644
--- a/ui/display/display_change_notifier.cc
+++ b/ui/display/display_change_notifier.cc
@@ -80,6 +80,9 @@ void DisplayChangeNotifier::NotifyDisplaysChanged(
     if (new_it->device_scale_factor() != old_it->device_scale_factor())
       metrics |= DisplayObserver::DISPLAY_METRIC_DEVICE_SCALE_FACTOR;
 
+    if (new_it->color_space() != old_it->color_space())
+      metrics |= DisplayObserver::DISPLAY_METRIC_COLOR_SPACE;
+
     if (metrics != DisplayObserver::DISPLAY_METRIC_NONE) {
       for (DisplayObserver& observer : observer_list_)
         observer.OnDisplayMetricsChanged(*new_it, metrics);