Clean up unused param in RegistryOverrideManager

Clean up unused param in RegistryOverrideManager

This param has been unused since http://crrev.com/234367 and makes the method confusing.

BUG=314800
Committed: https://crrev.com/6f7c83b276431b5473bd064e4eb315d60e17744f
Cr-Commit-Position: refs/heads/master@{#295400}

[gab, 2014-09-17 23:05:50]

gab@chromium.org changed reviewers:
+ phajdan.jr@chromium.org, thakis@chomium.org

[gab, 2014-09-17 23:05:51]

@Pawel for base/test main change.
@thakis for rubberstamp on side-effects in chrome/

CC tommicli/grt as implementor/reviewer of the original change.

Cheers,
Gab

[gab, 2014-09-17 23:07:28]

gab@chromium.org changed reviewers:
+ robertshield@chromium.org, thakis@chromium.org
- thakis@chomium.org

[gab, 2014-09-17 23:07:29]

+robertshield for installer/chrome_elf
(and thakis again for rlz/)

[Nico, 2014-09-18 00:29:19]

lgtm

Sorry, didn't see this the first time round:
https://code.google.com/p/chromium/issues/detail?id=415395

[Nico, 2014-09-18 01:25:54]

(nit: s/cleanup/clean up/ in the cl description. The former is a noun, the
latter is a verb.)

[robertshield, 2014-09-18 01:38:58]

lgtm

[gab, 2014-09-18 01:48:06]

On 2014/09/18 01:38:58, robertshield wrote:
> lgtm

Thanks, TBR Pawel since this is such a simple change and Nico already covers
base/test from base/*.

[gab, 2014-09-18 01:48:10]

The CQ bit was checked by gab@chromium.org

[commit-bot: I haz the power, 2014-09-18 01:48:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/575253002/20001

[commit-bot: I haz the power, 2014-09-18 02:38:00]

Committed patchset #2 (id:20001) as f20327370bcbdd124856410b75bdebda4af4e4ad

[commit-bot: I haz the power, 2014-09-18 02:38:54]

Patchset 2 (id:??) landed as
https://crrev.com/6f7c83b276431b5473bd064e4eb315d60e17744f
Cr-Commit-Position: refs/heads/master@{#295400}