[Sync] Move //components/sync to the syncer namespace.

components/sync/test/engine/fake_sync_scheduler.h

Index: components/sync/test/engine/fake_sync_scheduler.h
diff --git a/components/sync/test/engine/fake_sync_scheduler.h b/components/sync/test/engine/fake_sync_scheduler.h
index 9bfbbd0569d0f325d990b94fecb4c391c05b7876..23f59bfa42cd5e9ae1723bf304b39f78e4dde911 100644
--- a/components/sync/test/engine/fake_sync_scheduler.h
+++ b/components/sync/test/engine/fake_sync_scheduler.h
@@ -10,6 +10,7 @@
 #define COMPONENTS_SYNC_TEST_ENGINE_FAKE_SYNC_SCHEDULER_H_
 
 #include <map>
+#include <memory>
 
 #include "base/message_loop/message_loop.h"
 #include "components/sync/engine_impl/sync_scheduler.h"
@@ -30,13 +31,13 @@ class FakeSyncScheduler : public SyncScheduler {
       ModelTypeSet types,
       const tracked_objects::Location& nudge_location) override;
   void ScheduleInvalidationNudge(
-      syncer::ModelType type,
+      ModelType type,
       std::unique_ptr<InvalidationInterface> interface,
       const tracked_objects::Location& nudge_location) override;
   void ScheduleConfiguration(const ConfigurationParams& params) override;
   void ScheduleClearServerData(const ClearParams& params) override;
 
-  void ScheduleInitialSyncNudge(syncer::ModelType model_type) override;
+  void ScheduleInitialSyncNudge(ModelType model_type) override;
   void SetNotificationsEnabled(bool notifications_enabled) override;
 
   void OnCredentialsUpdated() override;