[automerger skipped] Move TcpKeepalivePacketData out of the framework. am: 82f2a72d01 am: 63a7fe7a9b
am: 48c1555d3c -s ours
am skip reason: change_id Ib2805f7fcc516a5f6989c252365d1c95b8042703 with SHA1 47002ed0d1 is in history

Change-Id: I844cf9813437afda3c835b087607a5ef2b38dc42