Remove the "not_after" validation of policy timestamps

chrome/browser/chromeos/policy/user_cloud_policy_store_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/user_cloud_policy_store_chromeos.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 135 matching lines @@
   validator->RunValidation();
   OnRetrievedPolicyValidated(validator.get());
 }
 
 void UserCloudPolicyStoreChromeOS::ValidatePolicyForStore(
     std::unique_ptr<em::PolicyFetchResponse> policy) {
   DCHECK(!is_active_directory_);
 
   // Create and configure a validator.
   std::unique_ptr<UserCloudPolicyValidator> validator = CreateValidator(
-      std::move(policy), CloudPolicyValidatorBase::TIMESTAMP_FULLY_VALIDATED);
+      std::move(policy), CloudPolicyValidatorBase::TIMESTAMP_VALIDATED);
   validator->ValidateUsername(account_id_.GetUserEmail(), true);
   if (cached_policy_key_.empty()) {
     validator->ValidateInitialKey(ExtractDomain(account_id_.GetUserEmail()));
   } else {
     validator->ValidateSignatureAllowingRotation(
         cached_policy_key_, ExtractDomain(account_id_.GetUserEmail()));
   }
 
   // Start validation.
   UserCloudPolicyValidator::StartValidation(
@@ skipping 185 matching lines @@
   } else {
     SampleValidationFailure(VALIDATION_FAILURE_DBUS);
   }
   ReloadPolicyKey(callback);
 }
 
 std::unique_ptr<UserCloudPolicyValidator>
 UserCloudPolicyStoreChromeOS::CreateValidatorForLoad(
     std::unique_ptr<em::PolicyFetchResponse> policy) {
   std::unique_ptr<UserCloudPolicyValidator> validator = CreateValidator(
-      std::move(policy), CloudPolicyValidatorBase::TIMESTAMP_NOT_BEFORE);
+      std::move(policy), CloudPolicyValidatorBase::TIMESTAMP_VALIDATED);
   if (is_active_directory_) {
     validator->ValidateTimestamp(
-        base::Time(), base::Time(),
-        CloudPolicyValidatorBase::TIMESTAMP_NOT_VALIDATED);
+        base::Time(), CloudPolicyValidatorBase::TIMESTAMP_NOT_VALIDATED);
     validator->ValidateDMToken(std::string(),
                                CloudPolicyValidatorBase::DM_TOKEN_NOT_REQUIRED);
     validator->ValidateDeviceId(
         std::string(), CloudPolicyValidatorBase::DEVICE_ID_NOT_REQUIRED);
   } else {
     validator->ValidateUsername(account_id_.GetUserEmail(), true);
     // The policy loaded from session manager need not be validated using the
     // verification key since it is secure, and since there may be legacy policy
     // data that was stored without a verification key.
     validator->ValidateSignature(cached_policy_key_);
   }
   return validator;
 }
 
 }  // namespace policy