[Password manager tests automation] Improves redability of code and logs.

[Password manager tests automation] Improves redability of code and logs.

* Removes succesfull runs from debug output.
* Use named parameter in call to stopit.ThreadingTimeout, in order to
  make it clear that it seconds.

BUG=369521
R=vabr@chromium.org

Committed: https://crrev.com/69bcb8eb5879ab2fd4ad03665f612ccff90c1cc6
Cr-Commit-Position: refs/heads/master@{#330743}

[melandory, 2015-05-20 14:12:31]

Hi Vaclav,

review this Cl, please.

[vabr (Chromium), 2015-05-20 14:50:11]

lgtm

[melandory, 2015-05-20 15:05:43]

The CQ bit was checked by melandory@chromium.org

[commit-bot: I haz the power, 2015-05-20 15:06:20]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1143223002/1

[commit-bot: I haz the power, 2015-05-20 16:03:44]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-05-20 16:04:46]

Patchset 1 (id:??) landed as
https://crrev.com/69bcb8eb5879ab2fd4ad03665f612ccff90c1cc6
Cr-Commit-Position: refs/heads/master@{#330743}