Turn off future-timestamp cloud policy checks on desktop

chrome/browser/policy/cloud/user_cloud_policy_store.cc

Index: chrome/browser/policy/cloud/user_cloud_policy_store.cc
diff --git a/chrome/browser/policy/cloud/user_cloud_policy_store.cc b/chrome/browser/policy/cloud/user_cloud_policy_store.cc
index 3592b85933a64addc71915a535997f289bfc6dc6..188dea453b074f4c7d50f64cca27d169cb3ff6c9 100644
--- a/chrome/browser/policy/cloud/user_cloud_policy_store.cc
+++ b/chrome/browser/policy/cloud/user_cloud_policy_store.cc
@@ -210,8 +210,9 @@ void UserCloudPolicyStore::Validate(
     bool validate_in_background,
     const UserCloudPolicyValidator::CompletionCallback& callback) {
   // Configure the validator.
-  scoped_ptr<UserCloudPolicyValidator> validator =
-      CreateValidator(policy.Pass());
+  scoped_ptr<UserCloudPolicyValidator> validator = CreateValidator(
+      policy.Pass(),
+      CloudPolicyValidatorBase::TIMESTAMP_REQUIRED_BUT_SYSTEM_TIME_UNRELIABLE);
   SigninManager* signin = SigninManagerFactory::GetForProfileIfExists(profile_);
   if (signin) {
     std::string username = signin->GetAuthenticatedUsername();