[Android] Fix BatteryStatusManagerTest instrumentation tests for devices running L.

[Android] Fix BatteryStatusManagerTest instrumentation tests for devices running L.

Currently some instrumentation tests relating to Battery Status API appear to fail
on Android L devices. This patch contains the fix.

BUG=474637
Committed: https://crrev.com/21669c13043b9b80f97f9b1536267a8da4436865
Cr-Commit-Position: refs/heads/master@{#324225}

[timvolodine, 2015-04-07 17:50:24]

timvolodine@chromium.org changed reviewers:
+ newt@chromium.org

[newt (away), 2015-04-07 20:57:00]

lgtm

Sorry about breaking this.

[timvolodine, 2015-04-08 13:54:07]

On 2015/04/07 20:57:00, newt wrote:
> lgtm
> 
> Sorry about breaking this.

thanks, no worries ;)

[timvolodine, 2015-04-08 13:54:18]

The CQ bit was checked by timvolodine@chromium.org

[commit-bot: I haz the power, 2015-04-08 13:54:40]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1061303003/1

[commit-bot: I haz the power, 2015-04-08 14:34:13]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-08 14:35:11]

Patchset 1 (id:??) landed as
https://crrev.com/21669c13043b9b80f97f9b1536267a8da4436865
Cr-Commit-Position: refs/heads/master@{#324225}