trunks: fix power_manager tests to use generated mock

This prevents fragility when the D-Bus interface for power_manager
changes. Instead of keeping a separate header that has to be
updated in lockstep, just incorporate the libpower_manager-client-test
package so we have access to a generated mock.

TEST=unit tests

Change-Id: Ieb45bd9f3b7a916dc288657bdba043eed243a29a
Commit-Ready: Eric Caruso <>
Tested-by: Eric Caruso <>
Reviewed-by: Dan Erat <>
4 files changed