Created AttestationPolicyObserver.

chrome/browser/chromeos/settings/device_settings_provider.cc

Index: chrome/browser/chromeos/settings/device_settings_provider.cc
diff --git a/chrome/browser/chromeos/settings/device_settings_provider.cc b/chrome/browser/chromeos/settings/device_settings_provider.cc
index 3427ee22bf9d30eb150422b37ae58e84b11c9d56..b2a9841e9910760a58f86d7f98f08e01bd35a918 100644
--- a/chrome/browser/chromeos/settings/device_settings_provider.cc
+++ b/chrome/browser/chromeos/settings/device_settings_provider.cc
@@ -67,6 +67,7 @@ const char* kKnownSettings[] = {
   kStatsReportingPref,
   kSystemTimezonePolicy,
   kStartUpFlags,
+  kDeviceAttestationEnabled,

[Mattias Nissler (ping if slow), 2013/04/10 17:31:03]

Alphabetize (and fix kStartUpFlags if you like :D)

[dkrahn, 2013/04/12 01:17:29]

Done.

 };
 
 // Legacy policy file location. Used to detect migration from pre v12 ChromeOS.
@@ -340,6 +341,7 @@ void DeviceSettingsProvider::SetInPolicy() {
     // The remaining settings don't support Set(), since they are not
     // intended to be customizable by the user:
     //   kAppPack
+    //   kDeviceAttestationEnabled
     //   kDeviceOwner
     //   kIdleLogoutTimeout
     //   kIdleLogoutWarningDuration
@@ -618,6 +620,10 @@ void DeviceSettingsProvider::DecodeGenericPolicies(
         kAllowRedeemChromeOsRegistrationOffers,
         !g_browser_process->browser_policy_connector()->IsEnterpriseManaged());
   }
+
+  new_values_cache->SetBoolean(
+      kDeviceAttestationEnabled,
+      policy.attestation_settings().attestation_enabled());
 }
 
 void DeviceSettingsProvider::UpdateValuesCache(