cc: Initialize test code tree variable in fake tiling client.

cc: Initialize test code tree variable in fake tiling client.

This patch initializes one of the variables that is used in the fake
tiling client.

R=danakj

Committed: https://crrev.com/4746695083b2ad5f38dae726f4f0ef16439264d9
Cr-Commit-Position: refs/heads/master@{#326941}

[vmpstr, 2015-04-24 23:18:01]

Please take a look.

[danakj, 2015-04-24 23:28:12]

LGTM

[vmpstr, 2015-04-24 23:28:44]

The CQ bit was checked by vmpstr@chromium.org

[commit-bot: I haz the power, 2015-04-24 23:29:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1102133002/40001

[commit-bot: I haz the power, 2015-04-25 00:24:05]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-04-25 00:24:50]

Patchset 3 (id:??) landed as
https://crrev.com/4746695083b2ad5f38dae726f4f0ef16439264d9
Cr-Commit-Position: refs/heads/master@{#326941}