Split up SyncEngineEventListener callbacks

sync/engine/syncer.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/engine/syncer.h"
 
 #include "base/debug/trace_event.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 161 matching lines @@
   TRACE_EVENT0("sync", "ApplyUpdates");
 
   ApplyControlDataUpdates(session->context()->directory());
 
   get_updates_processor->ApplyUpdatesForAllTypes(
       session->mutable_status_controller());
 
   session->context()->set_hierarchy_conflict_detected(
       session->status_controller().num_hierarchy_conflicts() > 0);
 
-  session->SendEventNotification(SyncEngineEvent::STATUS_CHANGED);
+  session->SendEventNotification(SyncCycleEvent::STATUS_CHANGED);
 }
 
 bool Syncer::DownloadUpdates(
     ModelTypeSet request_types,
     SyncSession* session,
     GetUpdatesProcessor* get_updates_processor,
     base::Callback<void(sync_pb::ClientToServerMessage*)> build_fn) {
   SyncerError download_result = UNSET;
   do {
     TRACE_EVENT0("sync", "DownloadUpdates");
@@ skipping 42 matching lines @@
     if (error != SYNCER_OK) {
       return error;
     }
   }
 
   return SYNCER_OK;
 }
 
 void Syncer::HandleCycleBegin(SyncSession* session) {
   session->mutable_status_controller()->UpdateStartTime();
-  session->SendEventNotification(SyncEngineEvent::SYNC_CYCLE_BEGIN);
+  session->SendEventNotification(SyncCycleEvent::SYNC_CYCLE_BEGIN);
 }
 
 bool Syncer::HandleCycleEnd(
     SyncSession* session,
     sync_pb::GetUpdatesCallerInfo::GetUpdatesSource source) {
   if (!ExitRequested()) {
     session->SendSyncCycleEndEventNotification(source);
     return true;
   } else {
     return false;
   }
 }
 
 }  // namespace syncer