[Sync] Migrate bridge implementations to change list based MergeSyncData

components/sync/model/stub_model_type_sync_bridge.cc

 // Copyright 2015 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 "components/sync/model/stub_model_type_sync_bridge.h"
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
 #include "components/sync/model/fake_model_type_change_processor.h"
 
 namespace syncer {
 
 StubModelTypeSyncBridge::StubModelTypeSyncBridge()
     : StubModelTypeSyncBridge(
           base::Bind(&FakeModelTypeChangeProcessor::Create)) {}
 
 StubModelTypeSyncBridge::StubModelTypeSyncBridge(
     const ChangeProcessorFactory& change_processor_factory)
     : ModelTypeSyncBridge(change_processor_factory, PREFERENCES) {}
 
 StubModelTypeSyncBridge::~StubModelTypeSyncBridge() {}
 
 std::unique_ptr<MetadataChangeList>
 StubModelTypeSyncBridge::CreateMetadataChangeList() {
   return std::unique_ptr<MetadataChangeList>();
 }
 
 base::Optional<ModelError> StubModelTypeSyncBridge::MergeSyncData(
     std::unique_ptr<MetadataChangeList> metadata_change_list,
-    EntityDataMap entity_data_map) {
+    EntityChangeList entity_data) {
   return {};
 }
 
 base::Optional<ModelError> StubModelTypeSyncBridge::ApplySyncChanges(
     std::unique_ptr<MetadataChangeList> metadata_change_list,
     EntityChangeList entity_changes) {
   return {};
 }
 
 void StubModelTypeSyncBridge::GetData(StorageKeyList storage_keys,
                                       DataCallback callback) {}
 
 void StubModelTypeSyncBridge::GetAllData(DataCallback callback) {}
 
 std::string StubModelTypeSyncBridge::GetClientTag(
     const EntityData& entity_data) {
   return std::string();
 }
 
 std::string StubModelTypeSyncBridge::GetStorageKey(
     const EntityData& entity_data) {
   return std::string();
 }
 
 }  // namespace syncer