+ Also fix race between ending and changing (holding/unholding) a SIP call. + Remove an unused method. Bug : 3128233 Change-Id: Ie18d8333a88f0d9906d54988243d909b58e07e4b
+ Also fix race between ending and changing (holding/unholding) a SIP call. + Remove an unused method. Bug : 3128233 Change-Id: Ie18d8333a88f0d9906d54988243d909b58e07e4b