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..2aec3558424e6b1de3cae2afb0465506822dd7aa 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, false, false);

[oshima, 2013/03/28 20:35:55]

can you add comments for what these false means like /* force probe */ ?
enum would be better but it'll leave it to you.

[Daniel Erat, 2013/03/28 23:09:41]

I've added constants for different flags.  (Haven't been able to test it on a
device yet due to http://crbug.com/224794.)

   } else {
     LOG(ERROR) << "Unable to parse " << kSetDisplayPower << " request";
   }