Remove implicit conversions from scoped_refptr to T* in chrome/browser/ui

Remove implicit conversions from scoped_refptr to T* in chrome/browser/ui

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

BUG=110610
Committed: https://crrev.com/312ba642cc708dfc5e1dcf90c0197d4258442186
Cr-Commit-Position: refs/heads/master@{#303938}

[dcheng, 2014-11-12 22:58:05]

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

[dcheng, 2014-11-12 22:58:05]

Time to finish this cleanup.

[msw, 2014-11-12 23:04:54]

lgtm

[dcheng, 2014-11-12 23:05:13]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-11-12 23:07:39]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/723803002/1

[commit-bot: I haz the power, 2014-11-13 00:43:41]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2014-11-13 00:44:31]

Patchset 1 (id:??) landed as
https://crrev.com/312ba642cc708dfc5e1dcf90c0197d4258442186
Cr-Commit-Position: refs/heads/master@{#303938}