Roll tools/swarming_client/ to b61a1802f5ef4bb8c7b81060cc80add47e6cf302.

Roll tools/swarming_client/ to b61a1802f5ef4bb8c7b81060cc80add47e6cf302.

$ git log 1b7bfeca3..b61a1802f --date=short --format='%ad %ae %s' | sed 's/@chromium\.org//'
2015-03-09 maruel Ignore command from included .isolate when the current one define a command.
2015-02-26 maruel Reduce ereporter2 spam on file locking on Windows.

R=vadimsh@chromium.org
BUG=440882
Committed: https://crrev.com/caacc8f6f669401de037cbfc7d18f0b7440347e0
Cr-Commit-Position: refs/heads/master@{#319780}

[Vadim Sh., 2015-03-09 19:40:38]

lgtm if it survived canary

[M-A Ruel, 2015-03-09 19:43:54]

On 2015/03/09 19:40:38, Vadim Sh. wrote:
> lgtm if it survived canary

It's running;
http://build.chromium.org/p/chromium.swarm/builders/Linux%20Swarm%20Tests/bui...
I'll uncheck CQ if something wrong happens there.

[M-A Ruel, 2015-03-09 19:43:57]

The CQ bit was checked by maruel@chromium.org

[commit-bot: I haz the power, 2015-03-09 19:45:13]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/986423002/1

[M-A Ruel, 2015-03-09 20:35:17]

The CQ bit was unchecked by maruel@chromium.org

[M-A Ruel, 2015-03-09 20:35:34]

The CQ bit was checked by maruel@chromium.org

[commit-bot: I haz the power, 2015-03-09 20:36:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/986423002/1

[commit-bot: I haz the power, 2015-03-09 23:58:55]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-03-09 23:59:20]

Patchset 1 (id:??) landed as
https://crrev.com/caacc8f6f669401de037cbfc7d18f0b7440347e0
Cr-Commit-Position: refs/heads/master@{#319780}