Remove implicit conversions from scoped_refptr to T* in components/data_reduction_proxy

Remove implicit conversions from scoped_refptr to T* in components/data_reduction_proxy

Manual fixups for cases the automated tooling elected to skip.

BUG=110610
TBR=bengr@chromium.org

Committed: https://crrev.com/0beaf399dbe43b5d1de38b3c8145f8759e070d6b
Cr-Commit-Position: refs/heads/master@{#298754}

[dcheng, 2014-10-07 22:15:13]

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

[bolian, 2014-10-07 23:10:15]

bolian@chromium.org changed reviewers:
+ bengr@chromium.org

[bolian, 2014-10-07 23:10:16]

lgtm.
added bengr for approval. Thanks for fxing this.

[dcheng, 2014-10-08 18:43:38]

I haven't been able to get in touch with bengr. Given the trivial nature of this
patch, and that it's one of the last blocking patches to disabling the implicit
conversion on Android, I'm going to go ahead and CQ this.

[dcheng, 2014-10-08 18:43:44]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-08 18:45:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/634023004/1

[commit-bot: I haz the power, 2014-10-08 18:45:56]

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

[commit-bot: I haz the power, 2014-10-08 18:45:58]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[dcheng, 2014-10-08 18:47:24]

The CQ bit was checked by dcheng@chromium.org

[commit-bot: I haz the power, 2014-10-08 18:50:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/634023004/1

[commit-bot: I haz the power, 2014-10-08 19:09:49]

Committed patchset #1 (id:1) as 50e457d83f9e6fae0e2020c374186f3f63cbe1a4

[commit-bot: I haz the power, 2014-10-08 19:12:41]

Patchset 1 (id:??) landed as
https://crrev.com/0beaf399dbe43b5d1de38b3c8145f8759e070d6b
Cr-Commit-Position: refs/heads/master@{#298754}

[bengr, 2014-10-08 19:26:46]

lgtm post facto