Deprecate the unused AutoCleanupSettigsProto.clean_up_strategy policy.

chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc

Index: chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
diff --git a/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc b/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
index 961252ff40120ce52d16856f800ee8a3df8fe690..0e740a637a3478dd5fbb53210b98cf75b1e2afe4 100644
--- a/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
+++ b/chrome/browser/chromeos/policy/device_policy_decoder_chromeos.cc
@@ -769,18 +769,6 @@ void DecodeGenericPolicies(const em::ChromeDeviceSettingsProto& policy,
       }
     }
   }
-  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