Refactor FakeServer::CreateDefaultPermanentItems()

Refactor FakeServer::CreateDefaultPermanentItems()

Removing some copy-paste code reuse. It's not that bad
here, but in Opera we have more folders we fake this way
and the copies start looking silly.

BUG=

Committed: https://crrev.com/908428a01742a93c4817a463cfd4e6c99fc56c0b
Cr-Commit-Position: refs/heads/master@{#311066}

[mpawlowski, 2015-01-12 16:07:04]

mpawlowski@opera.com changed reviewers:
+ atwilson@chromium.org, maniscalco@chromium.org

[Andrew T Wilson (Slow), 2015-01-12 16:13:05]

lgtm

[mpawlowski, 2015-01-12 16:36:59]

The CQ bit was checked by mpawlowski@opera.com

[commit-bot: I haz the power, 2015-01-12 16:38:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/833243007/1

[commit-bot: I haz the power, 2015-01-12 18:00:30]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-12 18:02:21]

Patchset 1 (id:??) landed as
https://crrev.com/908428a01742a93c4817a463cfd4e6c99fc56c0b
Cr-Commit-Position: refs/heads/master@{#311066}