Tracing: set service process names

Tested by running chrome --mash and capturing a trace in
chrome://tracing. The trace viewer shows actual process names instead
of the generic "Process (pid ????)" name.

TBR=skyostil@chromium.org

Change-Id: I0327a1b4d0dfba20699cc71dc420f0ee4035775b
Reviewed-on: https://chromium-review.googlesource.com/716865
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Scott Violet <sky@chromium.org>
Reviewed-by: Primiano Tucci <primiano@chromium.org>
Reviewed-by: Ken Rockot <rockot@chromium.org>
Commit-Queue: Ehsan Chiniforooshan <chiniforooshan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513717}

CrOS-Libchrome-Original-Commit: a8c8daddac975201a7164fb51eae3517199a9967
2 files changed
tree: 9418d43dd233f628aa44ebb0e430994b150c04a9
  1. base/
  2. build/
  3. components/
  4. dbus/
  5. device/
  6. ipc/
  7. mojo/
  8. testing/
  9. third_party/
  10. ui/