-// Creates an empty extension with a variable ID, for tests that require
-// multiple extensions side-by-side having distinct IDs. If not empty, then
-// id_input is passed directly to Extension::CreateId() and thus has the same
-// behavior as that method. If id_input is empty, then Extension::Create()
-// receives an empty explicit ID and generates an appropriate ID for a blank
-// extension.
-scoped_refptr<extensions::Extension> CreateEmptyExtension(
- const std::string& id_input);
-