Revert of [Telemetry] Remove adb_commands usage from android_device

Revert of [Telemetry] Remove adb_commands usage from android_device (patchset #4 id:90001 of https://codereview.chromium.org/1211323004/)

Reason for revert:
Speculative revert as this may break broke telemetry perf android tests (http://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/20964)

Original issue's description:
> [Telemetry] Remove adb_commands usage from android_device
>
> Reland of https://codereview.chromium.org/1212643002/
>
> This time, we don't use DeviceUtils.HealthyDevices() API to make sure that all
> connected devices are processed instead of only healthy devices. This is to make
> sure that the cq bots have enough capacity to handle the unittests load since
> some of the android bots used by CQ are marked unhealthy.
>
> BUG=476709
>
> Committed: https://crrev.com/d5bb872d537153753f930eab6097afb315612274
> Cr-Commit-Position: refs/heads/master@{#337099}

TBR=jbudorick@chromium.org
BUG=476709
Committed: https://crrev.com/8df2841213f300c7d72c9f20eb913f1c4a1c1f49
Cr-Commit-Position: refs/heads/master@{#337159}

[nednguyen, 2015-07-02 01:25:25]

Created Revert of [Telemetry] Remove adb_commands usage from android_device

[nednguyen, 2015-07-02 01:25:41]

The CQ bit was checked by nednguyen@google.com

[commit-bot: I haz the power, 2015-07-02 01:26:35]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1218823006/1

[commit-bot: I haz the power, 2015-07-02 02:30:51]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-07-02 02:31:54]

Patchset 1 (id:??) landed as
https://crrev.com/8df2841213f300c7d72c9f20eb913f1c4a1c1f49
Cr-Commit-Position: refs/heads/master@{#337159}