Floss: fix chromeos metrics signature

LogMetricsBondCreateAttempt has different signatures in
./system/gd/metrics/linux/metrics.cc
and
./system/gd/metrics/chromeos/metrics.cc

This causes fail to build.
This fix aligns the chromeos definition with linux.

BUG: 239780196
Tag: #floss
Test: emerge-${BOARD} floss
Change-Id: I3417770c9f0bcad2fa33a77093aefa3ada6809c3