[Sync] Add history delete directive type

sync/util/cryptographer.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 "sync/util/cryptographer.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 381 matching lines @@
   if (nigori.encrypt_search_engines())
     encrypted_types.Put(SEARCH_ENGINES);
   if (nigori.encrypt_sessions())
     encrypted_types.Put(SESSIONS);
   if (nigori.encrypt_app_settings())
     encrypted_types.Put(APP_SETTINGS);
   if (nigori.encrypt_apps())
     encrypted_types.Put(APPS);
   if (nigori.encrypt_app_notifications())
     encrypted_types.Put(APP_NOTIFICATIONS);
+  if (nigori.encrypt_history_delete_directives())
+    encrypted_types.Put(HISTORY_DELETE_DIRECTIVES);
 
   // Note: the initial version with encryption did not support the
   // encrypt_everything field. If anything more than the sensitive types were
   // encrypted, it meant we were encrypting everything.
   if (!nigori.has_encrypt_everything() &&
       !Difference(encrypted_types, SensitiveTypes()).Empty()) {
     set_encrypt_everything();
     return;
   }
 
@@ skipping 18 matching lines @@
   nigori->set_encrypt_extensions(
       encrypted_types_.Has(EXTENSIONS));
   nigori->set_encrypt_search_engines(
       encrypted_types_.Has(SEARCH_ENGINES));
   nigori->set_encrypt_sessions(encrypted_types_.Has(SESSIONS));
   nigori->set_encrypt_app_settings(
       encrypted_types_.Has(APP_SETTINGS));
   nigori->set_encrypt_apps(encrypted_types_.Has(APPS));
   nigori->set_encrypt_app_notifications(
       encrypted_types_.Has(APP_NOTIFICATIONS));
+  nigori->set_encrypt_history_delete_directives(
+      encrypted_types_.Has(HISTORY_DELETE_DIRECTIVES));
 }
 
 void Cryptographer::set_encrypt_everything() {
   if (encrypt_everything_) {
     DCHECK(encrypted_types_.Equals(ModelTypeSet::All()));
     return;
   }
   encrypt_everything_ = true;
   // Change |encrypted_types_| directly to avoid sending more than one
   // notification.
@@ skipping 39 matching lines @@
                                     key.mac_key())) {
         NOTREACHED();
         continue;
       }
       nigoris_[key.name()] = make_linked_ptr(new_nigori.release());
     }
   }
 }
 
 }  // namespace syncer