Convert //sync from scoped_ptr to std::unique_ptr

sync/internal_api/test/fake_model_type_service.cc

Index: sync/internal_api/test/fake_model_type_service.cc
diff --git a/sync/internal_api/test/fake_model_type_service.cc b/sync/internal_api/test/fake_model_type_service.cc
index 01325d1b1fe62721b708306215bd0694339d252e..c5ef783288fe49f147a381433451c689015c0a23 100644
--- a/sync/internal_api/test/fake_model_type_service.cc
+++ b/sync/internal_api/test/fake_model_type_service.cc
@@ -5,6 +5,7 @@
 #include "sync/internal_api/public/test/fake_model_type_service.h"
 
 #include "base/bind.h"
+#include "base/memory/ptr_util.h"
 #include "sync/internal_api/public/shared_model_type_processor.h"
 
 namespace syncer_v2 {
@@ -18,19 +19,19 @@ FakeModelTypeService::FakeModelTypeService()
 
 FakeModelTypeService::~FakeModelTypeService() {}
 
-scoped_ptr<MetadataChangeList>
+std::unique_ptr<MetadataChangeList>
 FakeModelTypeService::CreateMetadataChangeList() {
-  return scoped_ptr<MetadataChangeList>();
+  return std::unique_ptr<MetadataChangeList>();
 }
 
 syncer::SyncError FakeModelTypeService::MergeSyncData(
-    scoped_ptr<MetadataChangeList> metadata_change_list,
+    std::unique_ptr<MetadataChangeList> metadata_change_list,
     EntityDataMap entity_data_map) {
   return syncer::SyncError();
 }
 
 syncer::SyncError FakeModelTypeService::ApplySyncChanges(
-    scoped_ptr<MetadataChangeList> metadata_change_list,
+    std::unique_ptr<MetadataChangeList> metadata_change_list,
     EntityChangeList entity_changes) {
   return syncer::SyncError();
 }
@@ -52,10 +53,10 @@ ModelTypeChangeProcessor* FakeModelTypeService::CreateProcessorForTest(
   return processor_;
 }
 
-scoped_ptr<ModelTypeChangeProcessor>
+std::unique_ptr<ModelTypeChangeProcessor>
 FakeModelTypeService::CreateProcessorForTestWrapper(syncer::ModelType type,
                                                     ModelTypeService* service) {
-  return make_scoped_ptr(CreateProcessorForTest(type, service));
+  return base::WrapUnique(CreateProcessorForTest(type, service));
 }
 
 SharedModelTypeProcessor* FakeModelTypeService::SetUpProcessor(