Separate local and remote sync invalidations

sync/notifier/invalidator_factory.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/notifier/invalidator_factory.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "jingle/notifier/listener/push_client.h"
@@ skipping 44 matching lines @@
           invalidation_state_tracker->GetBootstrapData() :
           std::string()),
       invalidation_state_tracker_(invalidation_state_tracker) {
 }
 
 InvalidatorFactory::~InvalidatorFactory() {
 }
 
 Invalidator* InvalidatorFactory::CreateInvalidator() {
 #if defined(OS_ANDROID)
-  // Android uses ChromeSyncNotificationBridge exclusively.
+  // Android uses AndroidInvalidatorBridge instead.  See SyncManager
+  // initialization code in SyncBackendHost for more information.
   return NULL;
 #else
   return CreateDefaultInvalidator(notifier_options_,
                                   initial_invalidation_state_map_,
                                   invalidation_bootstrap_data_,
                                   invalidation_state_tracker_,
                                   client_info_);
 #endif
 }
 }  // namespace syncer