IncrementTrackerID 1532 chrome/browser/sync_file_system/drive_backend/metadata_database.cc   int64 tracker_id = IncrementTrackerID(batch);
IncrementTrackerID 1921 chrome/browser/sync_file_system/drive_backend/metadata_database.cc       CreateSyncRootTracker(IncrementTrackerID(batch), *sync_root_metadata);
IncrementTrackerID 1940 chrome/browser/sync_file_system/drive_backend/metadata_database.cc       CreateInitialAppRootTracker(IncrementTrackerID(batch),
IncrementTrackerID  391 chrome/browser/sync_file_system/drive_backend/metadata_database.h   int64 IncrementTrackerID(leveldb::WriteBatch* batch);