system_api: Add powerd IgnoreNextPowerButtonPress method

Add a constant for a new IgnoreNextPowerButtonPress powerd D-Bus method
used by the integrated second-factor authentication daemon.

BUG=b:35545754
TEST=emerge-eve system_api power_manager

Change-Id: I61913464344412d2c4a86afa58fcabcadf3de945
Reviewed-on: https://chromium-review.googlesource.com/541223
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
1 file changed