Atom - Replace session_state with ike_state

Use existing ike_state in place of session_state.

Bug: b/326878593
Test: Verified creating atoms from the IKE library
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:be7be7dce5dd674d7c0b378b5976c9d74f633f32)
Merged-In: Ib709c9b5a4bcebf0cce8340d02f2d43e3a308c41
Change-Id: Ib709c9b5a4bcebf0cce8340d02f2d43e3a308c41
2 files changed
tree: c2f04cdbee8dd6205d7e3ceb8c633daebe0e981d
  1. stats/
  2. OWNERS