GitLab

A system daemon needs a signal that indicate the printers list has
changed so it can query Chrome again.  This generates the
PrintersChanged signal from org.chromium.PrintersService.

Bug: b:143242799
Change-Id: I4424603b05f89691d568f03f220e7eaf37bd0cf9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1949041Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Reviewed-by: Jorge Lucangeli Obes <jorgelo@chromium.org>
Commit-Queue: Sean Kau <skau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743291}