Remove implicit conversions from scoped_refptr to T* in chrome/installer

Remove implicit conversions from scoped_refptr to T* in chrome/installer

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

BUG=110610
Committed: https://crrev.com/fb77f1ec663905428e3e9757e5ea91b220561aae
Cr-Commit-Position: refs/heads/master@{#303930}

[dcheng, 2014-11-12 22:50:08]

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

[robertshield, 2014-11-12 23:08:36]

lgtm

[dcheng, 2014-11-12 23:10:19]

The CQ bit was checked by dcheng@chromium.org

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

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/718253002/1

[commit-bot: I haz the power, 2014-11-13 00:08:26]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-13 00:09:01]

Patchset 1 (id:??) landed as
https://crrev.com/fb77f1ec663905428e3e9757e5ea91b220561aae
Cr-Commit-Position: refs/heads/master@{#303930}