More unit test source file separation.

More unit test source file separation.

This is in preparation for converting this target to GN. There shoule be no functional change.

TBR=dpranke

Committed: https://crrev.com/8ca309223e62c0c6dd76ad32dadf3a94cf4afe34
Cr-Commit-Position: refs/heads/master@{#310746}

[brettw, 2015-01-09 08:23:30]

The CQ bit was checked by brettw@chromium.org

[commit-bot: I haz the power, 2015-01-09 08:24:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/840213004/1

[commit-bot: I haz the power, 2015-01-09 09:46:08]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-01-09 09:47:13]

Patchset 1 (id:??) landed as
https://crrev.com/8ca309223e62c0c6dd76ad32dadf3a94cf4afe34
Cr-Commit-Position: refs/heads/master@{#310746}