Deprecate the unused AutoCleanupSettigsProto.clean_up_strategy policy.

chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc

 // 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.
 
 #include "chrome/browser/chromeos/policy/device_policy_decoder_chromeos.h"
 
 #include <limits>
 #include <string>
 
 #include "base/callback.h"
@@ skipping 751 matching lines @@
           key::kDeviceLoginScreenPowerManagement);
       if (decoded_json) {
         policies->Set(key::kDeviceLoginScreenPowerManagement,
                       POLICY_LEVEL_MANDATORY,
                       POLICY_SCOPE_MACHINE,
                       decoded_json.release(),
                       NULL);
       }
     }
   }
-  if (policy.has_auto_clean_up_settings()) {
-    const em::AutoCleanupSettigsProto& container(
-        policy.auto_clean_up_settings());
-    if (container.has_clean_up_strategy()) {
-      policies->Set(key::kAutoCleanUpStrategy,
-                    POLICY_LEVEL_MANDATORY,
-                    POLICY_SCOPE_MACHINE,
-                    new base::StringValue(
-                        container.clean_up_strategy()),
-                    NULL);
-    }
-  }
 }
 
 }  // namespace
 
 void DecodeDevicePolicy(const em::ChromeDeviceSettingsProto& policy,
                         PolicyMap* policies,
                         EnterpriseInstallAttributes* install_attributes) {
   // TODO(achuith): Remove this once crbug.com/263527 is resolved.
   VLOG(2) << "DecodeDevicePolicy " << policy.SerializeAsString();
 
   // Decode the various groups of policies.
   DecodeLoginPolicies(policy, policies);
   DecodeKioskPolicies(policy, policies, install_attributes);
   DecodeNetworkPolicies(policy, policies, install_attributes);
   DecodeReportingPolicies(policy, policies);
   DecodeAutoUpdatePolicies(policy, policies);
   DecodeAccessibilityPolicies(policy, policies);
   DecodeGenericPolicies(policy, policies);
 }
 
 }  // namespace policy