Explicitly shutting down tabs and server at end of apprtc test.

Explicitly shutting down tabs and server at end of apprtc test.

This is another attempt to try to figure out where we are really
hanging when this test hangs on the Win7 WebRTC bot.

no-try to bypass flaky win_rel bot.

TBR=grunell@chromium.org
BUG=373252
NOTRY=true

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=274574

[phoglund_chromium, 2014-06-03 10:16:30]

The CQ bit was checked by phoglund@chromium.org

[commit-bot: I haz the power, 2014-06-03 10:20:58]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/phoglund@chromium.org/309273002/1

[commit-bot: I haz the power, 2014-06-03 14:36:39]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[commit-bot: I haz the power, 2014-06-03 17:59:30]

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

[commit-bot: I haz the power, 2014-06-03 17:59:30]

Try jobs failed on following builders:
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)

[phoglund_chromium, 2014-06-03 18:20:29]

The CQ bit was checked by phoglund@chromium.org

[commit-bot: I haz the power, 2014-06-03 18:21:31]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/phoglund@chromium.org/309273002/1

[commit-bot: I haz the power, 2014-06-03 18:23:12]

Change committed as 274574

[Henrik Grunell, 2014-06-04 08:46:49]

lgtm