Remove implicit conversions from scoped_refptr to T* in device/

Remove implicit conversions from scoped_refptr to T* in device/

This patch was generated by running the rewrite_scoped_refptr clang tool
on a Windows build.

BUG=110610
Committed: https://crrev.com/8c6ae495cf2dd5117d0d209c25169710c491f992
Cr-Commit-Position: refs/heads/master@{#303940}

[dcheng, 2014-11-12 23:11:36]

dcheng@chromium.org changed reviewers:
+ rpaquay@chromium.org

[rpaquay, 2014-11-12 23:39:59]

lgtm

[dcheng, 2014-11-12 23:43:36]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-11-12 23:44:56]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/720973002/1

[commit-bot: I haz the power, 2014-11-13 00:48:48]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-13 00:49:20]

Patchset 1 (id:??) landed as
https://crrev.com/8c6ae495cf2dd5117d0d209c25169710c491f992
Cr-Commit-Position: refs/heads/master@{#303940}