[Android] Add a hard reset to device_status_check.

[Android] Add a hard reset to device_status_check.

Devices sometimes get in a state where any 'adb shell pm' commands or
attempts to reboot via 'adb reboot' hang. This patch adds a workaround
that reboots devices in that state.

Tested on build1-b4, which had 2 such devices.

BUG=

Committed: https://crrev.com/6f3a99116bbd04be5cf978d6e55ef1be18fb2ddc
Cr-Commit-Position: refs/heads/master@{#352759}

[jbudorick, 2015-10-07 01:20:05]

jbudorick@chromium.org changed reviewers:
+ mikecase@chromium.org, stip@chromium.org

[jbudorick, 2015-10-07 02:14:46]

note that the current try job hit one such device and recovered it:
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_android_r...

[ghost stip (do not use), 2015-10-07 02:36:47]

lgtm. assuming the purple is due to the perf_unittests timeouts

[jbudorick, 2015-10-07 02:41:50]

On 2015/10/07 02:36:47, stip wrote:
> lgtm. assuming the purple is due to the perf_unittests timeouts

only linux_android_rel_ng runs this among the trybots, and that one isn't
purple.

[jbudorick, 2015-10-07 02:41:54]

The CQ bit was checked by jbudorick@chromium.org

[commit-bot: I haz the power, 2015-10-07 02:43:10]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1392763002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1392763002/20001

[commit-bot: I haz the power, 2015-10-07 03:43:29]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-10-07 03:44:58]

Patchset 2 (id:??) landed as
https://crrev.com/6f3a99116bbd04be5cf978d6e55ef1be18fb2ddc
Cr-Commit-Position: refs/heads/master@{#352759}