[SyncFS] Add MetadataDatabase::PopulateInitialData

chrome/browser/sync_file_system/drive_backend/metadata_database.h

Index: chrome/browser/sync_file_system/drive_backend/metadata_database.h
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database.h b/chrome/browser/sync_file_system/drive_backend/metadata_database.h
index e57d583e3ab811902cda55ed638f6e9d7aa8cdbf..d223e51f687bd0d0fc3f38575fd4ee5b97f81724 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database.h
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database.h
@@ -124,6 +124,14 @@ class MetadataDatabase {
 
   int64 GetLargestChangeID() const;
 
+  bool HasSyncRoot() const;
+
+  void PopulateInitialData(
+      int64 largest_change_id,
+      const google_apis::FileResource& sync_root_folder,
+      const ScopedVector<google_apis::FileResource>& app_root_folders,
+      const SyncStatusCallback& callback);
+
   // Registers existing folder as the app-root for |app_id|.  The folder
   // must be an inactive folder that does not yet associated to any App.
   // This method associates the folder with |app_id| and activates it.