Turn off future-timestamp cloud policy checks on desktop

chrome/browser/policy/cloud/user_cloud_policy_store.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/policy/cloud/user_cloud_policy_store.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "chrome/browser/policy/proto/cloud/device_management_backend.pb.h"
 #include "chrome/browser/policy/proto/cloud/device_management_local.pb.h"
@@ skipping 192 matching lines @@
            true,
            base::Bind(&UserCloudPolicyStore::StorePolicyAfterValidation,
                       weak_factory_.GetWeakPtr()));
 }
 
 void UserCloudPolicyStore::Validate(
     scoped_ptr<em::PolicyFetchResponse> policy,
     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_NOT_BEFORE);
   SigninManager* signin = SigninManagerFactory::GetForProfileIfExists(profile_);
   if (signin) {
     std::string username = signin->GetAuthenticatedUsername();
     if (username.empty())
       username = signin->GetUsernameForAuthInProgress();
 
     // Validate the username if the user is signed in (or in the process of
     // signing in).
     if (!username.empty())
       validator->ValidateUsername(username);
@@ skipping 25 matching lines @@
   content::BrowserThread::PostTask(
       content::BrowserThread::FILE, FROM_HERE,
       base::Bind(&StorePolicyToDiskOnFileThread,
                  backing_file_path_, *validator->policy()));
   InstallPolicy(validator->policy_data().Pass(), validator->payload().Pass());
   status_ = STATUS_OK;
   NotifyStoreLoaded();
 }
 
 }  // namespace policy