[heap] Remove remaining parts of PathTracer.

[heap] Remove remaining parts of PathTracer.

This should have been removed with 9e187e.

BUG=

Review-Url: https://codereview.chromium.org/2719013002
Cr-Commit-Position: refs/heads/master@{#43444}
Committed: https://chromium.googlesource.com/v8/v8/+/8f42a3d8a06ee665e04d203182cd64cdfa6b5ba7

[ulan, 2017-02-27 10:15:32]

ulan@chromium.org changed reviewers:
+ cbruni@chromium.org

[ulan, 2017-02-27 10:15:32]

ptal

[Camillo Bruni, 2017-02-27 10:15:50]

lgtm

[ulan, 2017-02-27 10:16:20]

The CQ bit was checked by ulan@chromium.org

[commit-bot: I haz the power, 2017-02-27 10:16:23]

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, 2017-02-27 10:40:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488190580402090, "parent_rev":
"eb5f06dec8802b1376e7f86c1d56a825db0e9435", "commit_rev":
"8f42a3d8a06ee665e04d203182cd64cdfa6b5ba7"}

[commit-bot: I haz the power, 2017-02-27 10:40:08]

Description was changed from

==========
[heap] Remove remaining parts of PathTracer.

This should have been removed with 9e187e.

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

to

==========
[heap] Remove remaining parts of PathTracer.

This should have been removed with 9e187e.

BUG=

Review-Url: https://codereview.chromium.org/2719013002
Cr-Commit-Position: refs/heads/master@{#43444}
Committed:
https://chromium.googlesource.com/v8/v8/+/8f42a3d8a06ee665e04d203182cd64cdfa6...
==========

[commit-bot: I haz the power, 2017-02-27 10:40:10]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/8f42a3d8a06ee665e04d203182cd64cdfa6...