reverse_constant: PP_NaClReadyState, PP_NaClError, and PP_NaClEventType
ppb_nacl: add parameter tracing
ppb_nacl_get_url_scheme: treat all urls as "other" scheme
impl ppb_url_loader_finish_streaming_to_file
ppb_file_ref: add parameter tracing
impl ppb_url_response_info_get_body_as_file_ref
ppb_file_io: add parameter tracing
ppb_url_response_info_get_body_as_file_ref: fix typo
impl ppb_file_io_create