[Mac] Reland r276808 Use a native MessagePump instead of a MessagePumpDefault (https://coderevie…

Reland change to use a native MessagePump instead of a MessagePumpDefault.
Original CL: https://codereview.chromium.org/331513002/

The previous CL caused a bunch of LibJingle unit tests to fail because the tests
were using a gtest death test which runs in the context of a fork()ed but not
execu()ed process.

A CF Message loop can't live in this environment.  Explicitly construct a
MessagePumpDefault for these tests.

BUG=356804, 385604
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=279013

[jeremy, 2014-06-13 23:13:11]

Reland change to use a native MessagePump instead of a MessagePumpDefault.

The previous CL caused a bunch of LibJingle unit tests to fail because the tests
were using a gtest death test which runs in the context of a fork()ed but not
execu()ed process.

A CF Message loop can't live in this environment.  Explicitly construct a
MessagePumpDefault for these tests.

BUG=356804

[jeremy, 2014-06-13 23:22:23]

ajwong: owner review for libjingle please.

[Mark Mentovai, 2014-06-13 23:39:15]

LGTM in base.

[awong, 2014-06-14 00:01:10]

LGTM

[jeremy, 2014-06-17 13:25:16]

Valgrind wasn't happy with the patch, from an initial look the leaks it's
reporting are bogus but I may very well be wrong.
I've filed crbug.com/385604 with details and I'll hold off landing the patch for
another day in case people think these are real.

[jeremy, 2014-06-19 13:44:53]

The CQ bit was checked by jeremy@chromium.org

[jeremy, 2014-06-19 13:45:14]

The CQ bit was unchecked by jeremy@chromium.org

[jeremy, 2014-06-19 13:46:08]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-06-19 13:47:43]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jeremy@chromium.org/331983002/20001

[commit-bot: I haz the power, 2014-06-19 18:04:58]

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

[commit-bot: I haz the power, 2014-06-19 18:04:59]

Try jobs failed on following builders:
  linux_chromium_chromeos_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_clang_...)

[jeremy, 2014-06-22 11:48:23]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-06-22 11:48:54]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jeremy@chromium.org/331983002/20001

[commit-bot: I haz the power, 2014-06-22 12:00:53]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  linux_chromium_chromeos_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_chrome...)
  linux_chromium_clang_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_clang_...)
  mac_chromium_compile_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/mac_chromium_compile_...)
  win_chromium_compile_dbg on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_compile_...)

[commit-bot: I haz the power, 2014-06-22 12:03:47]

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

[commit-bot: I haz the power, 2014-06-22 12:03:48]

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

[jeremy, 2014-06-22 12:34:30]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-06-22 12:35:31]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jeremy@chromium.org/331983002/40001

[commit-bot: I haz the power, 2014-06-22 14:25:01]

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

[commit-bot: I haz the power, 2014-06-22 14:42:29]

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

[commit-bot: I haz the power, 2014-06-22 14:42:29]

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

[jeremy, 2014-06-22 16:15:03]

The CQ bit was checked by jeremy@chromium.org

[commit-bot: I haz the power, 2014-06-22 16:16:09]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/jeremy@chromium.org/331983002/40001

[commit-bot: I haz the power, 2014-06-22 16:16:39]

Change committed as 279013

[ckocagil, 2014-06-22 20:55:34]

A revert of this CL has been created in
https://codereview.chromium.org/332333004/ by ckocagil@chromium.org.

The reason for reverting is: Breaks XmppConnectionTest.MultipleConnect on Mac:
http://build.chromium.org/p/chromium.mac/builders/Mac%2010.6%20Tests%20%28dbg....