[Sync] Clean up ProfileSyncService observer events

chrome/browser/sync/glue/sync_backend_host_core.cc

 // Copyright 2013 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/sync/glue/sync_backend_host_core.h"
 
 #include "base/files/file_util.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/sync/glue/invalidation_adapter.h"
 #include "chrome/browser/sync/glue/local_device_info_provider_impl.h"
@@ skipping 117 matching lines @@
       FROM_HERE,
       &SyncBackendHostImpl::HandleSyncCycleCompletedOnFrontendLoop,
       snapshot);
 }
 
 void SyncBackendHostCore::DoRefreshTypes(syncer::ModelTypeSet types) {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   sync_manager_->RefreshTypes(types);
 }
 
-void SyncBackendHostCore::OnControlTypesDownloadRetry() {
-  host_.Call(FROM_HERE,
-             &SyncBackendHostImpl::HandleControlTypesDownloadRetry);
-}
-
 void SyncBackendHostCore::OnInitializationComplete(
     const syncer::WeakHandle<syncer::JsBackend>& js_backend,
     const syncer::WeakHandle<syncer::DataTypeDebugInfoListener>&
         debug_info_listener,
     bool success,
     const syncer::ModelTypeSet restored_types) {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
 
   if (!success) {
     DoDestroySyncManager(syncer::STOP_SYNC);
@@ skipping 62 matching lines @@
 
   sync_manager_->ConfigureSyncer(
       reason,
       new_control_types,
       types_to_purge,
       syncer::ModelTypeSet(),
       syncer::ModelTypeSet(),
       routing_info,
       base::Bind(&SyncBackendHostCore::DoInitialProcessControlTypes,
                  weak_ptr_factory_.GetWeakPtr()),
-      base::Bind(&SyncBackendHostCore::OnControlTypesDownloadRetry,
-                 weak_ptr_factory_.GetWeakPtr()));
+      base::Closure());
 }
 
 void SyncBackendHostCore::OnConnectionStatusChange(
     syncer::ConnectionStatus status) {
   if (!sync_loop_)
     return;
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   host_.Call(
       FROM_HERE,
       &SyncBackendHostImpl::HandleConnectionStatusChangeOnFrontendLoop, status);
@@ skipping 491 matching lines @@
       base::TimeDelta::FromSeconds(kSaveChangesIntervalSeconds),
       this, &SyncBackendHostCore::SaveChanges);
 }
 
 void SyncBackendHostCore::SaveChanges() {
   DCHECK_EQ(base::MessageLoop::current(), sync_loop_);
   sync_manager_->SaveChanges();
 }
 
 }  // namespace browser_sync