Revert of [Sync] Move //components/sync to the syncer namespace. (patchset #5 id:40001 of https://co

components/sync/engine_impl/sync_scheduler_impl.cc

Index: components/sync/engine_impl/sync_scheduler_impl.cc
diff --git a/components/sync/engine_impl/sync_scheduler_impl.cc b/components/sync/engine_impl/sync_scheduler_impl.cc
index 204f89079fa33bbf3489c2ab70c57dc7984a0938..5bb5c30dd5e46aee2aa4a03d650f79410f4a04d6 100644
--- a/components/sync/engine_impl/sync_scheduler_impl.cc
+++ b/components/sync/engine_impl/sync_scheduler_impl.cc
@@ -411,7 +411,7 @@ void SyncSchedulerImpl::ScheduleLocalRefreshRequest(
 }
 
 void SyncSchedulerImpl::ScheduleInvalidationNudge(
-    ModelType model_type,
+    syncer::ModelType model_type,
     std::unique_ptr<InvalidationInterface> invalidation,
     const tracked_objects::Location& nudge_location) {
   DCHECK(CalledOnValidThread());
@@ -424,7 +424,7 @@ void SyncSchedulerImpl::ScheduleInvalidationNudge(
   ScheduleNudgeImpl(nudge_delay, nudge_location);
 }
 
-void SyncSchedulerImpl::ScheduleInitialSyncNudge(ModelType model_type) {
+void SyncSchedulerImpl::ScheduleInitialSyncNudge(syncer::ModelType model_type) {
   DCHECK(CalledOnValidThread());
 
   SDVLOG(2) << "Scheduling non-blocking initial sync for "