Remove implicit conversions from scoped_refptr to T* in net/

Remove implicit conversions from scoped_refptr to T* in net/

This patch was generated by running the rewrite_scoped_refptr clang tool
on an Android build.

BUG=110610
Committed: https://crrev.com/0eb8b4f58a683620917fb3d71a91504ebecd7922
Cr-Commit-Position: refs/heads/master@{#298434}

[dcheng, 2014-10-06 22:39:23]

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

[szym, 2014-10-07 02:21:53]

lgtm

[dcheng, 2014-10-07 02:57:51]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-07 02:59:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/632873002/1

[commit-bot: I haz the power, 2014-10-07 05:02:51]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-10-07 05:02:51]

Exceeded time limit waiting for builds to trigger.

[dcheng, 2014-10-07 10:06:48]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-07 10:07:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/632873002/1

[commit-bot: I haz the power, 2014-10-07 10:08:09]

Committed patchset #1 (id:1) as b591d61b3c7a9720b05e0d8641c9b90ad26df09b

[commit-bot: I haz the power, 2014-10-07 10:08:47]

Patchset 1 (id:??) landed as
https://crrev.com/0eb8b4f58a683620917fb3d71a91504ebecd7922
Cr-Commit-Position: refs/heads/master@{#298434}