Don't clear metrics_client_id on shutdown

Don't clear metrics_client_id on shutdown

Because we use the same path for disabling as shutdown, the
metrics_client_id crash key gets cleared during browser shutdown. This
is undesireable because then it won't be there for crashes that happen
late in shutdown. Avoid this by simply not clearing it when shutting
down.

R=asvitkine@chromium.org
BUG=604487
Committed: https://crrev.com/e5170aea4b461dd96aade4f9b7ba2fe8d67fe096
Cr-Commit-Position: refs/heads/master@{#388215}

[Alexei Svitkine (slow), 2016-04-19 13:45:25]

lgtm

[scottmg, 2016-04-19 15:38:43]

The CQ bit was checked by scottmg@chromium.org

[commit-bot: I haz the power, 2016-04-19 15:39:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1894973005/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1894973005/1

[commit-bot: I haz the power, 2016-04-19 15:42:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-04-22 19:12:33]

Description was changed from

==========
Don't clear metrics_client_id on shutdown

Because we use the same path for disabling as shutdown, the
metrics_client_id crash key gets cleared during browser shutdown. This
is undesireable because then it won't be there for crashes that happen
late in shutdown. Avoid this by simply not clearing it when shutting
down.

R=asvitkine@chromium.org
BUG=604487
==========

to

==========
Don't clear metrics_client_id on shutdown

Because we use the same path for disabling as shutdown, the
metrics_client_id crash key gets cleared during browser shutdown. This
is undesireable because then it won't be there for crashes that happen
late in shutdown. Avoid this by simply not clearing it when shutting
down.

R=asvitkine@chromium.org
BUG=604487

Committed: https://crrev.com/e5170aea4b461dd96aade4f9b7ba2fe8d67fe096
Cr-Commit-Position: refs/heads/master@{#388215}
==========

[commit-bot: I haz the power, 2016-04-22 19:12:34]

Patchset 1 (id:??) landed as
https://crrev.com/e5170aea4b461dd96aade4f9b7ba2fe8d67fe096
Cr-Commit-Position: refs/heads/master@{#388215}