Add the protobufs for the set of session timeout policies planned for the kiosk mode.

chrome/browser/policy/proto/chrome_device_policy.proto

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 package enterprise_management;
 
@@ skipping 79 matching lines @@
   optional bool report_version_info = 1;
   optional bool report_activity_times = 2;
   optional bool report_boot_mode = 3;
 }
 
 message EphemeralUsersEnabledProto {
   // Determines whether users should be treated as ephemeral.
   optional bool ephemeral_users_enabled = 1;
 }
 
+message ForcedLogoutTimeoutsProto {
+  // All timeouts are specified in milliseconds.
+
+  // Specifies the duration of a session before the user is unconditionally
+  // logged out.
+  // If omitted or set to 0. No idle timeout will be performed.

[Mattias Nissler (ping if slow), 2012/02/21 10:41:38]

Please fix comment grammar, here and below.

[pastarmovj, 2012/02/22 14:22:27]

Done.

+  optional int64 forced_logout_timeout = 1;
+  // Specifies the duration of a warning countdown before the user is logged out
+  // because of the |forced_logout_timeout| has been set.
+  // Only used if |forced_logout_timeout| is specified.
+  optional int64 forced_logout_warning_duration = 2;
+  // Specifies the timeout before an idle user session is terminated.
+  // If omitted or set to 0. No idle timeout will be performed.
+  optional int64 idle_logout_timeout = 3;
+  // Specifies the duration of a warning countdown before the user is logged out
+  // because of idleness as specified by the |idle_logout_timeout| value.
+  // Only used if |idle_logout_timeout| is specified.
+  optional int64 idle_logout_warning_duration = 4;

[rkc, 2012/02/21 18:15:36]

What's the difference between this and the forced_logout_warning_duration? Isn't
forced logout something that will only happen on idle timeout anyway?

[pastarmovj, 2012/02/22 14:22:27]

I thought somewhere along the course of discussion there was the idea to also
log out unconditionally after some time. But if this is not implemented yet we
can as well remove those fields until it is really needed.

[rkc, 2012/02/22 17:39:07]

Ah I see what you mean. No, we don't plan on having a forced logout in terms of
absolute time at the moment. Though let me check with Josh if that is something
we might need.

[rkc, 2012/02/23 21:10:13]

Spoke with Josh; the forced_logout_warning_duration and forced_logout_timeout
are not needed at this point. These are both tentative policies that have issues
that need to be worked out with before they should be implemented.

The idle_logout_timeout and idle_logout_warning_duration are the only two needed
here.

+}
+
+message ScreenSaverTimeout {
+  // Specified in milliseconds the timeout before the screen saver is activated
+  // on the login screen if no user activity present. Only respected if the
+  // device is in KIOSK mode.
+  // If omitted or set to 0. No idle timeout will be performed.
+  optional int64 screen_saver_timeout = 1;
+}
+
 message ChromeDeviceSettingsProto {
   optional DevicePolicyRefreshRateProto device_policy_refresh_rate = 1;
   optional UserWhitelistProto user_whitelist = 2;
   optional GuestModeEnabledProto guest_mode_enabled = 3;
   optional DeviceProxySettingsProto device_proxy_settings = 4;
   optional CameraEnabledProto camera_enabled = 5;
   optional ShowUserNamesOnSigninProto show_user_names = 6;
   optional DataRoamingEnabledProto data_roaming_enabled = 7;
   optional AllowNewUsersProto allow_new_users = 8;
   optional MetricsEnabledProto metrics_enabled = 9;
   optional ReleaseChannelProto release_channel = 10;
   optional DeviceOpenNetworkConfigurationProto open_network_configuration = 11;
   optional DeviceReportingProto device_reporting = 12;
   optional EphemeralUsersEnabledProto ephemeral_users_enabled = 13;
+  optional ForcedLogoutTimeoutsProto forced_logout_timeouts = 14;
+  optional ScreenSaverTimeout screen_saver_timeout = 15;
 }