Revert "Remove battery saver condition."

This reverts commit 44b28f4a2b5cea5abeb603fe81a38f6f8a666bc5.
Bug: 121115306
Test: robotests

Reason for revert: Change of design

Change-Id: Ia2b9131595d582fd8300367f729fde2b3de81b6e
8 files changed