Add a trace to output the scheduler settings.

Add a trace to output the scheduler settings.

BUG=371223
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=269662

[mithro-old, 2014-05-09 22:01:50]

Hi Brian,

Another small debugging improvement. Was finding it hard to figure out how a
scheduler was setup up in the unit test from the trace log. This makes it
significantly easier.

Tim 'mithro' Ansell

[brianderson, 2014-05-09 22:05:13]

lgtm

[mithro-old, 2014-05-09 22:22:31]

The CQ bit was checked by mithro@mithis.com

[commit-bot: I haz the power, 2014-05-09 22:25:12]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/mithro@mithis.com/271173005/1

[commit-bot: I haz the power, 2014-05-10 06:34:49]

FYI, CQ is re-trying this CL (attempt #1).
Please consider checking whether the failures are real,
and report flakes to chrome-troopers@google.com.
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)
  linux_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/linux_chromium_rel/bu...)
  win_chromium_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_rel/buil...)
  win_chromium_x64_rel on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/win_chromium_x64_rel/...)

[commit-bot: I haz the power, 2014-05-11 00:53:23]

Change committed as 269662