[heap] Remove --print-cumulative-gc-stat flag.

[heap] Remove --print-cumulative-gc-stat flag.

The same information can be obtained by processing --trace-gc-nvp output
or using trace event and GC metric of catapult in Chrome.

BUG=

Committed: https://crrev.com/74145159afdbb5274dc432842779002d39cc37ec
Cr-Commit-Position: refs/heads/master@{#39780}

[ulan, 2016-09-22 15:11:45]

ulan@chromium.org changed reviewers:
+ hpayer@chromium.org, mlippautz@chromium.org, ofrobots@google.com

[ulan, 2016-09-22 15:11:46]

Hannes, ptal.

Michael, Ali: fyi.

[Michael Lippautz, 2016-09-26 11:09:06]

Cannot remember ever using this flag, so lgtm from my side.

[ulan, 2016-09-27 14:43:25]

The CQ bit was checked by ulan@chromium.org

[commit-bot: I haz the power, 2016-09-27 14:43:32]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-27 15:27:26]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-09-27 15:27:44]

Description was changed from

==========
[heap] Remove --print-cumulative-gc-stat flag.

The same information can be obtained by processing --trace-gc-nvp output
or using trace event and GC metric of catapult in Chrome.

BUG=
==========

to

==========
[heap] Remove --print-cumulative-gc-stat flag.

The same information can be obtained by processing --trace-gc-nvp output
or using trace event and GC metric of catapult in Chrome.

BUG=

Committed: https://crrev.com/74145159afdbb5274dc432842779002d39cc37ec
Cr-Commit-Position: refs/heads/master@{#39780}
==========

[commit-bot: I haz the power, 2016-09-27 15:27:45]

Patchset 2 (id:??) landed as
https://crrev.com/74145159afdbb5274dc432842779002d39cc37ec
Cr-Commit-Position: refs/heads/master@{#39780}