Multi-install cleanups in setup.

Multi-install cleanups in setup.

Including:
- Removes the "multi-install" crash key from setup.exe.
- Removes some dead test code.
- Removes duplicated code in IsActivelyUsedIn.

BUG=577816
Review-Url: https://codereview.chromium.org/2619963005
Cr-Commit-Position: refs/heads/master@{#442883}
Committed: https://chromium.googlesource.com/chromium/src/+/33819cefcc12915026026b12e66fc773fa531ceb

[Sébastien Marchand, 2017-01-10 18:39:03]

sebmarchand@chromium.org changed reviewers:
+ sebmarchand@chromium.org

[Sébastien Marchand, 2017-01-10 18:39:04]

lgtm

[grt (UTC plus 2), 2017-01-11 11:52:10]

The CQ bit was checked by grt@chromium.org

[commit-bot: I haz the power, 2017-01-11 11:52:32]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-01-11 12:32:27]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484135530157040, "parent_rev":
"3861e32ac068bf7e92aece084bbf77ddae9c298c", "commit_rev":
"33819cefcc12915026026b12e66fc773fa531ceb"}

[commit-bot: I haz the power, 2017-01-11 12:32:56]

Description was changed from

==========
Multi-install cleanups in setup.

Including:
- Removes the "multi-install" crash key from setup.exe.
- Removes some dead test code.
- Removes duplicated code in IsActivelyUsedIn.

BUG=577816
==========

to

==========
Multi-install cleanups in setup.

Including:
- Removes the "multi-install" crash key from setup.exe.
- Removes some dead test code.
- Removes duplicated code in IsActivelyUsedIn.

BUG=577816

Review-Url: https://codereview.chromium.org/2619963005
Cr-Commit-Position: refs/heads/master@{#442883}
Committed:
https://chromium.googlesource.com/chromium/src/+/33819cefcc12915026026b12e66f...
==========

[commit-bot: I haz the power, 2017-01-11 12:32:57]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/33819cefcc12915026026b12e66f...