chromeos: Support turning displays off in extended mode.

chrome/browser/chromeos/dbus/display_power_service_provider.cc

Index: chrome/browser/chromeos/dbus/display_power_service_provider.cc
diff --git a/chrome/browser/chromeos/dbus/display_power_service_provider.cc b/chrome/browser/chromeos/dbus/display_power_service_provider.cc
index 5de5c95dc7eb362dd2c53cd751632c15fab565da..6f629f2d75a97f833f84984b360a24b6e745a140 100644
--- a/chrome/browser/chromeos/dbus/display_power_service_provider.cc
+++ b/chrome/browser/chromeos/dbus/display_power_service_provider.cc
@@ -62,7 +62,7 @@ void DisplayPowerServiceProvider::SetDisplayPower(
 
     DisplayPowerState state = static_cast<DisplayPowerState>(int_state);
     ash::Shell::GetInstance()->output_configurator()->SetDisplayPower(
-        state, false);
+        state, OutputConfigurator::kSetDisplayPowerNoFlags);
   } else {
     LOG(ERROR) << "Unable to parse " << kSetDisplayPower << " request";
   }