- This removes the need for a separate task stack listener and aligns with other task info change properties - Also implement equals/hashCode for the token so we can use it in containers Bug: 148977538 Test: atest TaskOrganizerTests Signed-off-by: Winson Chung <winsonc@google.com> Change-Id: Ie035e6389fdbdc374c1a4b4a684758efa0cb7a9e