RequestOSFileHandle 30 ppapi/cpp/private/file_io_private.cc int32_t FileIO_Private::RequestOSFileHandle( RequestOSFileHandle 411 ppapi/proxy/file_io_resource.cc int32_t FileIOResource::RequestOSFileHandle( RequestOSFileHandle 22 ppapi/thunk/ppb_file_io_private_thunk.cc int32_t RequestOSFileHandle(PP_Resource file_io,