Better error messaging for perf tryjobs on windows XP.

Better error messaging for perf tryjobs on windows XP.

Remove XP from list of perf trybots in telemetry
Add error message for perf tryjobs on win XP

BUG=414830
Committed: https://crrev.com/318e47b7ea27e08622ef20b69f2066117d70895b
Cr-Commit-Position: refs/heads/master@{#295722}

[sullivan, 2014-09-16 18:28:50]

sullivan@chromium.org changed reviewers:
+ prasadv@chromium.org

[sullivan, 2014-09-19 13:41:13]

ping?

[prasadv, 2014-09-19 16:13:07]

lgtm

[sullivan, 2014-09-19 16:16:01]

The CQ bit was checked by sullivan@chromium.org

[commit-bot: I haz the power, 2014-09-19 16:17:23]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/570413003/1

[commit-bot: I haz the power, 2014-09-19 16:26:21]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-09-19 16:26:22]

Try jobs failed on following builders:
  chromium_presubmit on tryserver.chromium.linux
(http://build.chromium.org/p/tryserver.chromium.linux/builders/chromium_presub...)

[sullivan, 2014-09-19 16:28:53]

sullivan@chromium.org changed reviewers:
+ dtu@chromium.org, tonyg@chromium.org

[sullivan, 2014-09-19 16:28:53]

Tony or Dave, can you take a look at the telemetry change? It removes
trybot-win-xp from the browser list because tryjobs do not work on XP. They no
longer show up with --browser=list, and it gives an error with
--browser=trybot-win-xp.

[tonyg, 2014-09-19 16:38:11]

The CQ bit was checked by tonyg@chromium.org

[tonyg, 2014-09-19 16:38:12]

lgtm

[commit-bot: I haz the power, 2014-09-19 16:39:03]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/570413003/1

[commit-bot: I haz the power, 2014-09-19 17:16:32]

Committed patchset #1 (id:1) as 0059fc2f8008f8b1d6e3d6848fb6699596914072

[commit-bot: I haz the power, 2014-09-19 17:17:08]

Patchset 1 (id:??) landed as
https://crrev.com/318e47b7ea27e08622ef20b69f2066117d70895b
Cr-Commit-Position: refs/heads/master@{#295722}