Roll tools/swarming_client/ to b19319e0bc258985a01760c4260fcfb2b338db2b.

Roll tools/swarming_client/ to b19319e0bc258985a01760c4260fcfb2b338db2b.

$ git log 4eeada947..b19319e0b --date=short --format='%ad %ae %s' | sed 's/@chromium\.org//'
2014-04-27 vadimsh Refactor retry loop in swarming 'collect'.
2014-04-26 vadimsh Make task names unique by default by appending timestamp to them.
2014-04-18 vadimsh Print list of shards that are still running while waiting in 'collect'.

R=maruel@chromium.org
BUG=

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=266699

[M-A Ruel, 2014-04-28 18:26:40]

lgtm

[Vadim Sh., 2014-04-28 18:27:20]

The CQ bit was checked by vadimsh@chromium.org

[commit-bot: I haz the power, 2014-04-28 18:28:25]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/vadimsh@chromium.org/252023008/1

[commit-bot: I haz the power, 2014-04-28 19:52:48]

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

[commit-bot: I haz the power, 2014-04-28 19:52:48]

Try jobs failed on following builders:
  tryserver.chromium on android_aosp

[Vadim Sh., 2014-04-28 20:14:19]

The CQ bit was checked by vadimsh@chromium.org

[commit-bot: I haz the power, 2014-04-28 20:14:54]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/vadimsh@chromium.org/252023008/1

[commit-bot: I haz the power, 2014-04-28 23:54:55]

Change committed as 266699