Tolerate more than one copy of the --mash command line switch

Tolerate more than one copy of the --mash command line switch

It's common to add --mash to the /etc/chrome_dev.conf when working on a
Chrome OS device. However, that can lead to two copies of --mash if you run
an autotest on the device that also passes --mash. This makes Chrome crash.

Ignore duplicate --mash flags.

BUG=669705
TEST=Run chrome --mash --mash, doesn't crash.

Committed: https://crrev.com/e498622015dd9b7355fc941c1e5837ff104ac9e2
Cr-Commit-Position: refs/heads/master@{#435655}

[James Cook, 2016-12-01 00:23:58]

The CQ bit was checked by jamescook@chromium.org to run a CQ dry run

[James Cook, 2016-12-01 00:24:26]

jamescook@chromium.org changed reviewers:
+ rockot@chromium.org

[James Cook, 2016-12-01 00:24:26]

rockot, please take a look.

[commit-bot: I haz the power, 2016-12-01 00:24:34]

Dry run: 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, 2016-12-01 00:48:50]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-12-01 00:48:51]

Dry run: This issue passed the CQ dry run.

[James Cook, 2016-12-01 02:08:39]

The CQ bit was checked by jamescook@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-12-01 02:08:55]

Dry run: 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, 2016-12-01 02:36:10]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-12-01 02:36:11]

Dry run: This issue passed the CQ dry run.

[Ken Rockot(use gerrit already), 2016-12-01 18:16:29]

lgtm

[James Cook, 2016-12-01 18:31:14]

The CQ bit was checked by jamescook@chromium.org

[commit-bot: I haz the power, 2016-12-01 18:32:00]

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, 2016-12-01 18:37:33]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1480617074883220,
"parent_rev": "b77ad1b3d47f29642938af4c2825467f6e0df017", "commit_rev":
"fdf3584fde29bfc2c602cf4f6d0beff52e9d026e"}

[commit-bot: I haz the power, 2016-12-01 18:38:06]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-12-01 18:42:06]

Description was changed from

==========
Tolerate more than one copy of the --mash command line switch

It's common to add --mash to the /etc/chrome_dev.conf when working on a
Chrome OS device. However, that can lead to two copies of --mash if you run
an autotest on the device that also passes --mash. This makes Chrome crash.

Ignore duplicate --mash flags.

BUG=669705
TEST=Run chrome --mash --mash, doesn't crash.
==========

to

==========
Tolerate more than one copy of the --mash command line switch

It's common to add --mash to the /etc/chrome_dev.conf when working on a
Chrome OS device. However, that can lead to two copies of --mash if you run
an autotest on the device that also passes --mash. This makes Chrome crash.

Ignore duplicate --mash flags.

BUG=669705
TEST=Run chrome --mash --mash, doesn't crash.

Committed: https://crrev.com/e498622015dd9b7355fc941c1e5837ff104ac9e2
Cr-Commit-Position: refs/heads/master@{#435655}
==========

[commit-bot: I haz the power, 2016-12-01 18:42:07]

Patchset 2 (id:??) landed as
https://crrev.com/e498622015dd9b7355fc941c1e5837ff104ac9e2
Cr-Commit-Position: refs/heads/master@{#435655}