Oilpan: Marking time measurement should not measure the time taken in postGC()

Oilpan: Marking time measurement should not measure the time taken in postGC()

When we enable GC_PROFILING, postGC() does a lot of time-consuming work.
So it shouldn't be counted as a marking time (otherwise we will confuse the marking
time estimation). This change will have no effect on builds where GC_PROFILING disabled
because postGC() will do almost nothing in those builds.

BUG=474470
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=197258

[haraken, 2015-06-17 06:25:01]

haraken@chromium.org changed reviewers:
+ yutak@chromium.org

[haraken, 2015-06-17 06:25:02]

PTAL

[Yuta Kitamura, 2015-06-17 07:24:43]

LGTM as long as other tasks in postGC are short enough.

I was thinking something that deducts only the overhead
from tracing, but I'm fine with this patch if this patch
does not change the behavior on non-tracing environment.

[haraken, 2015-06-17 07:45:48]

The CQ bit was checked by haraken@chromium.org

[haraken, 2015-06-17 07:46:06]

> I was thinking something that deducts only the overhead
> from tracing, but I'm fine with this patch if this patch
> does not change the behavior on non-tracing environment.

Yes, postGC() does nothing interesting.

[commit-bot: I haz the power, 2015-06-17 07:46:12]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1193503002/1

[commit-bot: I haz the power, 2015-06-17 09:46:25]

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

[commit-bot: I haz the power, 2015-06-17 09:46:26]

Try jobs failed on following builders:
  mac_blink_rel on tryserver.blink (JOB_FAILED,
http://build.chromium.org/p/tryserver.blink/builders/mac_blink_rel/builds/59212)

[Yuta Kitamura, 2015-06-17 10:23:49]

The CQ bit was checked by yutak@chromium.org

[commit-bot: I haz the power, 2015-06-17 10:24:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1193503002/1

[commit-bot: I haz the power, 2015-06-17 13:09:54]

Committed patchset #1 (id:1) as
https://src.chromium.org/viewvc/blink?view=rev&revision=197258