const compress/flate.DefaultCompression

5 uses

	compress/flate (current package)
		deflate.go#L17: 	DefaultCompression = -1
		deflate.go#L597: 	case level == DefaultCompression:

	compress/gzip
		gzip.go#L22: 	DefaultCompression = flate.DefaultCompression

	compress/zlib
		writer.go#L22: 	DefaultCompression = flate.DefaultCompression

	golang.org/x/crypto/openpgp/packet
		compressed.go#L26: 	DefaultCompression = flate.DefaultCompression