[automerger skipped] Merge "Add keepalive related methods and fields to system APIs" am: a4885a0b8e am: caa935af0c am: 2d73be3acd -s ours
am skip reason: Change-Id I2d982e8abb5cb6b4c74a20483550b18cf814320d with SHA-1 70061ab8f1 is in history
Change-Id: Iac4c0a4c7d56693fe3505336c007565ac3ce76f8
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