Retreive the BatteryManager as a system service.

Retreive the BatteryManager as a system service.

BatteryManager is offered as a system service and Chrome should not be
instantiating it. Updates the code to retrieve the correct instance.

Committed: https://crrev.com/9d93b73ca332fd8a6e9babe73415d6e388d1b1b7
Cr-Commit-Position: refs/heads/master@{#329437}

[Yaron, 2015-05-12 17:14:15]

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

[timvolodine, 2015-05-12 17:24:36]

lgtm thanks!

[Yaron, 2015-05-12 17:25:16]

The CQ bit was checked by yfriedman@chromium.org

[commit-bot: I haz the power, 2015-05-12 17:26:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1133253003/1

[commit-bot: I haz the power, 2015-05-12 17:55:29]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-12 17:56:57]

Patchset 1 (id:??) landed as
https://crrev.com/9d93b73ca332fd8a6e9babe73415d6e388d1b1b7
Cr-Commit-Position: refs/heads/master@{#329437}