[Telemetry] Allow the Monsoon to power the device under test.

[Telemetry] Allow the Monsoon to power the device under test.

The monsoon provides power for the device, so for devices with no
real battery, we need a chance to turn them on after the monsoon
enables voltage output to the device.

BUG=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=285005

[qsr, 2014-07-23 08:27:41]

LGTM with nit

https://chromiumcodereview.appspot.com/400863002/diff/20001/tools/telemetry/t...
File tools/telemetry/telemetry/core/backends/chrome/android_browser_finder.py
(right):

https://chromiumcodereview.appspot.com/400863002/diff/20001/tools/telemetry/t...
tools/telemetry/telemetry/core/backends/chrome/android_browser_finder.py:200:
m.SetVoltage(3.8)
We are using 4V in the profiler. Any reason not to do the same here?

[tonyg, 2014-07-23 15:51:21]

On 2014/07/23 08:27:41, qsr_OoO_until_Aug_17 wrote:
> LGTM with nit
> 
>
https://chromiumcodereview.appspot.com/400863002/diff/20001/tools/telemetry/t...
> File tools/telemetry/telemetry/core/backends/chrome/android_browser_finder.py
> (right):
> 
>
https://chromiumcodereview.appspot.com/400863002/diff/20001/tools/telemetry/t...
> tools/telemetry/telemetry/core/backends/chrome/android_browser_finder.py:200:
> m.SetVoltage(3.8)
> We are using 4V in the profiler. Any reason not to do the same here?

Per our offline chat, my experimentation indicates this is necessary to power on
the device, however the profiler changes it to 4V.

[tonyg, 2014-07-23 15:51:31]

The CQ bit was checked by tonyg@chromium.org

[commit-bot: I haz the power, 2014-07-23 15:53:20]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/tonyg@chromium.org/400863002/20001

[commit-bot: I haz the power, 2014-07-23 19:00:12]

Change committed as 285005