GC: Add tracing event for rescanning large objects on newspace evacuation

GC: Add tracing event for rescanning large objects on newspace evacuation

BUG=

Committed: https://crrev.com/b2f56b8599ae6c158eceb1508e7585b8840028a5
Cr-Commit-Position: refs/heads/master@{#29945}

[Michael Lippautz, 2015-07-30 14:57:36]

mlippautz@chromium.org changed reviewers:
+ hpayer@chromium.org

[Hannes Payer (out of office), 2015-07-31 06:51:53]

lgtm, with one nit

https://codereview.chromium.org/1269753002/diff/20001/src/heap/gc-tracer.h
File src/heap/gc-tracer.h (right):

https://codereview.chromium.org/1269753002/diff/20001/src/heap/gc-tracer.h#ne...
src/heap/gc-tracer.h:107: MC_SWEEP_RESCAN_LARGE_OBJECTS,
This is actually not sweeping. Let's call it MC_RESCAN_LARGE_OBJECTS.

[Michael Lippautz, 2015-07-31 06:54:38]

https://codereview.chromium.org/1269753002/diff/20001/src/heap/gc-tracer.h
File src/heap/gc-tracer.h (right):

https://codereview.chromium.org/1269753002/diff/20001/src/heap/gc-tracer.h#ne...
src/heap/gc-tracer.h:107: MC_SWEEP_RESCAN_LARGE_OBJECTS,
On 2015/07/31 06:51:53, Hannes Payer wrote:
> This is actually not sweeping. Let's call it MC_RESCAN_LARGE_OBJECTS.

Done.

[Michael Lippautz, 2015-07-31 06:55:34]

The CQ bit was checked by mlippautz@chromium.org

[Michael Lippautz, 2015-07-31 06:55:34]

The patchset sent to the CQ was uploaded after l-g-t-m from hpayer@chromium.org
Link to the patchset: https://codereview.chromium.org/1269753002/#ps40001
(title: "Addressed comment")

[commit-bot: I haz the power, 2015-07-31 06:55:46]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1269753002/40001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1269753002/40001

[commit-bot: I haz the power, 2015-07-31 07:29:37]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-07-31 07:29:58]

Patchset 3 (id:??) landed as
https://crrev.com/b2f56b8599ae6c158eceb1508e7585b8840028a5
Cr-Commit-Position: refs/heads/master@{#29945}