repo sync 307f15faaf Add REFER handling.
Handle REFER requests including REFER with Replaces header.

bug:4958680
Change-Id: I96df95097b78bed67ab8abd309a1e57a45c6bc2f
2011-07-13 04:12:28 +08:00
..
2011-07-13 04:12:28 +08:00