Fix video_decode_accelerator_unittest build on non-CrOS

ui/display/chromeos/display_configurator.h

Index: ui/display/chromeos/display_configurator.h
diff --git a/ui/display/chromeos/display_configurator.h b/ui/display/chromeos/display_configurator.h
index b61d3653a490975bdf4bbe7774e4678ae6cdd73a..af7ee2afd0c556f9b39281d5a2204ff675da7aa5 100644
--- a/ui/display/chromeos/display_configurator.h
+++ b/ui/display/chromeos/display_configurator.h
@@ -356,8 +356,9 @@ class DISPLAY_EXPORT DisplayConfigurator : public NativeDisplayObserver {
   bool is_panel_fitting_enabled_;
 
   // This is detected by the constructor to determine whether or not we should
-  // be enabled.  If we aren't running on ChromeOS, we can't assume that the
-  // Xrandr X11 extension is supported.
+  // be enabled.  If we aren't running on Chrome OS, we can't assume that the
+  // Xrandr X11 extension or the Ozone underlying display hotplug system are
+  // supported.
   // If this flag is set to false, any attempts to change the display
   // configuration to immediately fail without changing the state.
   bool configure_display_;