Add device policy to disallow shutdown

chromeos/settings/cros_settings_names.cc

Index: chromeos/settings/cros_settings_names.cc
diff --git a/chromeos/settings/cros_settings_names.cc b/chromeos/settings/cros_settings_names.cc
index 37fa6e8a2be845676da3607851c644320317f7fb..9c2b43eb03b6cb737a0046e273eff59d85c716b5 100644
--- a/chromeos/settings/cros_settings_names.cc
+++ b/chromeos/settings/cros_settings_names.cc
@@ -160,4 +160,9 @@ const char kDeviceDisabled[] = "cros.device_disabled";
 // the device is disabled.
 const char kDeviceDisabledMessage[] = "cros.disabled_state.message";
 
+// A boolean pref that indicates whether the user is allowed to shut down the

[bartfab (slow), 2014/12/15 18:01:57]

Nit: Reword this comment to talk about reboots rather than shutdowns. Otherwise,
we have inverse logic that is hard to follow: "indicates whether the user is
allowed to do X... if |true|, Y is forbidden."

[cschuet (SLOW), 2014/12/16 10:02:08]

Done.

+// device. If set to true, all shutdown buttons in the UI will be replaced by
+// reboot buttons.
+const char kRebootOnShutdown[] = "cros.device.reboot_on_shutdown";
+
 }  // namespace chromeos