Fix shutdown race in IPCSyncChannelTest and get rid of "suppressions"/annotations.

Fix shutdown race in IPCSyncChannelTest and get rid of "suppressions"/annotations.

Shut down explicitly, rather than doing it in a virtual destructor, which leads
to a vtable race.

(Possibly also related is http://crbug.com/70075, but I haven't been able to
reproduce, so I'll try to re-enable that separately.)

BUG=25841
TEST=ipc_tests + TSAN still happy


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=175487

[jam, 2013-01-04 23:44:14]

lgtm

[commit-bot: I haz the power, 2013-01-04 23:53:51]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/1

[commit-bot: I haz the power, 2013-01-05 00:22:44]

Sorry for I got bad news for ya.
Compile failed with a clobber build on mac.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=mac&number...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-01-05 00:41:18]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/8003

[commit-bot: I haz the power, 2013-01-05 01:17:19]

Sorry for I got bad news for ya.
Compile failed with a clobber build on win.
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=win&number...
Your code is likely broken or HEAD is junk. Please ensure your
code is not broken then alert the build sheriffs.
Look at the try server FAQ for more details.

[commit-bot: I haz the power, 2013-01-05 06:57:11]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-05 07:11:26]

Retried try job too often on ios_dbg_simulator for step(s) sync_unit_tests,
unit_tests

[commit-bot: I haz the power, 2013-01-05 17:22:48]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-05 17:31:04]

Retried try job too often on ios_dbg_simulator for step(s) sync_unit_tests,
unit_tests

[commit-bot: I haz the power, 2013-01-06 08:17:04]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-06 08:25:44]

Retried try job too often on ios_dbg_simulator for step(s) sync_unit_tests,
unit_tests

[commit-bot: I haz the power, 2013-01-07 00:53:05]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-07 01:01:45]

Retried try job too often on ios_dbg_simulator for step(s) sync_unit_tests,
unit_tests

[commit-bot: I haz the power, 2013-01-07 07:36:07]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-07 07:52:45]

Retried try job too often on ios_dbg_simulator for step(s) sync_unit_tests,
unit_tests

[commit-bot: I haz the power, 2013-01-07 17:52:04]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-07 20:16:18]

Retried try job too often on win_aura for step(s) interactive_ui_tests

[commit-bot: I haz the power, 2013-01-08 00:38:50]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/viettrungluu@chromium.org/11761038/3003

[commit-bot: I haz the power, 2013-01-08 06:09:08]

Change committed as 175487