Created AttestationPolicyObserver.

chrome/browser/chromeos/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 255 matching lines @@
 
 message UptimeLimitProto {
   // Sets the length of device uptime after which an automatic reboot is
   // scheduled. An automatic reboot is scheduled at the selected time but may be
   // delayed on the device by up to 24 hours, e.g. if a user is currently using
   // the device or an app/extension has requested reboots to be inhibited
   // temporarily. The policy value should be specified in seconds.
   optional int64 uptime_limit = 1;
 }
 
+message AttestationSettingsProto {
+  // Attestation involves proving that a cryptographic key is protected by a
+  // legitimate Chrome OS TPM and reporting the operating mode of the platform.
+  // This setting enables attestation features at a device level.  If this is
+  // enabled a machine key will be generated and certified by the Chrome OS
+  // CA.  If this setting is disabled, the device will not communicate with the
+  // Chrome OS CA under any circumstances.  Even users with attestation settings
+  // enabled will not be able to use those features on the device.
+  optional bool attestation_enabled = 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 AppPackProto app_pack = 14;
   optional ForcedLogoutTimeoutsProto forced_logout_timeouts = 15;
   optional ScreenSaverProto login_screen_saver = 16;
   optional AutoUpdateSettingsProto auto_update_settings = 17;
   optional StartUpUrlsProto start_up_urls = 18;
   optional PinnedAppsProto pinned_apps = 19;
   optional SystemTimezoneProto system_timezone = 20;
   optional DeviceLocalAccountsProto device_local_accounts = 21;
   optional AllowRedeemChromeOsRegistrationOffersProto allow_redeem_offers = 22;
   optional StartUpFlagsProto start_up_flags = 23;
   optional UptimeLimitProto uptime_limit = 24;
+  optional AttestationSettingsProto attestation_settings = 25;
 }