Replace swap with Pass() on setters in drive_api_parser.

chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc

Index: chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
diff --git a/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc b/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
index b843f079704116887753a5c26773538d43ab4fb2..fb2e171e6af6e91fb883f67f91c27ba90214c5a9 100644
--- a/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
+++ b/chrome/browser/sync_file_system/drive_backend/metadata_database_unittest.cc
@@ -412,7 +412,7 @@ class MetadataDatabaseTest : public testing::Test {
     }
 
     file_resource->set_file_id(file.file_id());
-    file_resource->set_parents(&parents);
+    file_resource->set_parents(parents.Pass());
     file_resource->set_title(file.details().title());
     if (file.details().file_kind() == FILE_KIND_FOLDER)
       file_resource->set_mime_type("application/vnd.google-apps.folder");