Revert "DevTools: Implement live heap profile."

This reverts commit 7ddffe6a4a5eb3a30760a3df05639ef613577b77.

Reason for revert: reverting due to FindIt bot determining this cl to be the reason https://ci.chromium.org/p/chromium/builders/ci/Mac10.13%20Tests%20%28dbg%29 is failing.

Original change's description:
> DevTools: Implement live heap profile.
> 
> This is the initial implementation of the profiler. It is put behind
> a hidden experiment.
> 
> BUG=937880
> 
> Change-Id: I55f4fb7f234ba3baff9ade8a0b9523e736204dc9
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1501994
> Commit-Queue: Alexei Filippov <alph@chromium.org>
> Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#638794}

TBR=dgozman@chromium.org,alph@chromium.org

Change-Id: I7c3a5ce70db32ccd882b425ff6cc4432b6a68b0d
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 937880
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1511256
Reviewed-by: Kamila Hasanbega <hkamila@chromium.org>
Commit-Queue: Kamila Hasanbega <hkamila@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638963}
11 files changed