Fix a bug in RapporService::LoadSecret

Fix a bug in RapporService::LoadSecret

Testing for this fix to be added by
https://codereview.chromium.org/845863002/

BUG=448269
Committed: https://crrev.com/83fc6907e8de0362881e4bcdafd4a2186a008aee
Cr-Commit-Position: refs/heads/master@{#311327}

[Steven Holte, 2015-01-13 04:46:41]

holte@chromium.org changed reviewers:
+ asvitkine@chromium.org

[Steven Holte, 2015-01-13 04:48:20]

On 2015/01/13 04:46:41, Steven Holte wrote:
> mailto:holte@chromium.org changed reviewers:
> + mailto:asvitkine@chromium.org

I'm keeping the minimal fix in this CL so it can be easily merged back to other
branches.  I think we should commit this, then commit the additional testing in
https://codereview.chromium.org/845863002/

[Alexei Svitkine (slow), 2015-01-13 16:44:54]

LGTM, please change the CL description to reference the follow-up CL that's
adding tests.

[Steven Holte, 2015-01-13 20:20:43]

The CQ bit was checked by holte@chromium.org

[commit-bot: I haz the power, 2015-01-13 20:22:08]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/848823002/1

[commit-bot: I haz the power, 2015-01-13 21:31:49]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-13 21:32:46]

Patchset 1 (id:??) landed as
https://crrev.com/83fc6907e8de0362881e4bcdafd4a2186a008aee
Cr-Commit-Position: refs/heads/master@{#311327}