Drive: Move inner structures of DriveAPIService under drive namespace.

chrome/browser/sync_file_system/drive_backend/folder_creator.cc

Index: chrome/browser/sync_file_system/drive_backend/folder_creator.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/folder_creator.cc b/chrome/browser/sync_file_system/drive_backend/folder_creator.cc
index d0bf11dce97ec4f88a436d856ae206b9c41fa0a9..252b1c77aa263768ea51f1d9a3c52ccd12329ce7 100644
--- a/chrome/browser/sync_file_system/drive_backend/folder_creator.cc
+++ b/chrome/browser/sync_file_system/drive_backend/folder_creator.cc
@@ -34,9 +34,7 @@ FolderCreator::~FolderCreator() {
 
 void FolderCreator::Run(const FileIDCallback& callback) {
   drive_service_->AddNewDirectory(
-      parent_folder_id_,
-      title_,
-      drive::DriveServiceInterface::AddNewDirectoryOptions(),
+      parent_folder_id_, title_, drive::AddNewDirectoryOptions(),
       base::Bind(&FolderCreator::DidCreateFolder,
                  weak_ptr_factory_.GetWeakPtr(), callback));
 }