The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/8dcec2d180e56dcfe84506daac08ef37d7d57a24

commit 8dcec2d180e56dcfe84506daac08ef37d7d57a24
Author: jcivelli <jcivelli@chromium.org>
Date: Thu Oct 27 18:54:23 2016

Make sure an "all user" service works when packaged as part of another
service:
- Use the empty string as instance id when none provided instead of the
  service name.
- Disable the tracing service by default.
- changed the ServiceManagerListener.OnServiceStarted notification so it
  is fired when the service has replied (instead of when the process is
  created)
- introduced a ServiceManagerListener notification for when a service
  was not started
- added a new instance_per_child flag to service_manager to control
  whether a new process should be created when starting a new
  packaged service

BUG= 658368 
TEST=ServiceManagerTest.CreatePackagedSingletonInstance

Review-Url: https://codereview.chromium.org/2440903002
Cr-Commit-Position: refs/heads/master@{#428098}

[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/chrome/app/mash/chrome_mash_manifest.json
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/chrome/test/base/mash_browser_tests_manifest.json
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/mash/task_viewer/task_viewer.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/catalog/entry.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/public/cpp/lib/identity.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/public/interfaces/resolver.mojom
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/public/interfaces/service_manager.mojom
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/service_manager.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/service_manager.h
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/standalone/context.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/switches.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/switches.h
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/connect/connect_unittest.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/lifecycle/lifecycle_unittest.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/BUILD.gn
[add] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/embedder.cc
[add] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/embedder_manifest.json
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/service_manager_unittest.cc
[modify] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/service_manager_unittest_manifest.json
[add] https://crrev.com/8dcec2d180e56dcfe84506daac08ef37d7d57a24/services/service_manager/tests/service_manager/singleton_manifest.json