Revert of [heap] Simplify clearing of normalized map caches.

Revert of [heap] Simplify clearing of normalized map caches. (patchset #1 id:1 of https://codereview.chromium.org/2745183002/ )

Reason for revert:
https://bugs.chromium.org/p/v8/issues/detail?id=6135

Original issue's description:
> [heap] Simplify clearing of normalized map caches.
> 
> Currently the incremental marking visitor treats elements of normalized
> map caches weakly by coloring the caches grey without pusing to marking
> deque.
> 
> The mark-compact prologue then clears all normalized map caches.
> 
> We can achieve similar effect by just clearing the caches in the marking
> visitor.
> 
> BUG=chromium:694255
> 
> Review-Url: https://codereview.chromium.org/2745183002
> Cr-Commit-Position: refs/heads/master@{#43941}
> Committed: https://chromium.googlesource.com/v8/v8/+/3d68306c71b17ebcb306b4e2ed8cae110c52229c

TBR=hpayer@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:694255
Review-Url: https://codereview.chromium.org/2771703003
Cr-Commit-Position: refs/heads/master@{#44056}
Committed: https://chromium.googlesource.com/v8/v8/+/1a7a6057504cf57ee31a8513309898ca2cb1b7dc

[ulan, 2017-03-23 08:59:30]

The CQ bit was checked by ulan@chromium.org

[ulan, 2017-03-23 08:59:33]

Created Revert of [heap] Simplify clearing of normalized map caches.

[commit-bot: I haz the power, 2017-03-23 08:59:37]

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, 2017-03-23 09:28:08]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1490259570686160, "parent_rev":
"8aa3459f2098d6a489d357b7837170fd9872fc67", "commit_rev":
"1a7a6057504cf57ee31a8513309898ca2cb1b7dc"}

[commit-bot: I haz the power, 2017-03-23 09:28:13]

Description was changed from

==========
Revert of [heap] Simplify clearing of normalized map caches. (patchset #1 id:1
of https://codereview.chromium.org/2745183002/ )

Reason for revert:
https://bugs.chromium.org/p/v8/issues/detail?id=6135

Original issue's description:
> [heap] Simplify clearing of normalized map caches.
> 
> Currently the incremental marking visitor treats elements of normalized
> map caches weakly by coloring the caches grey without pusing to marking
> deque.
> 
> The mark-compact prologue then clears all normalized map caches.
> 
> We can achieve similar effect by just clearing the caches in the marking
> visitor.
> 
> BUG=chromium:694255
> 
> Review-Url: https://codereview.chromium.org/2745183002
> Cr-Commit-Position: refs/heads/master@{#43941}
> Committed:
https://chromium.googlesource.com/v8/v8/+/3d68306c71b17ebcb306b4e2ed8cae110c5...

TBR=hpayer@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:694255
==========

to

==========
Revert of [heap] Simplify clearing of normalized map caches. (patchset #1 id:1
of https://codereview.chromium.org/2745183002/ )

Reason for revert:
https://bugs.chromium.org/p/v8/issues/detail?id=6135

Original issue's description:
> [heap] Simplify clearing of normalized map caches.
> 
> Currently the incremental marking visitor treats elements of normalized
> map caches weakly by coloring the caches grey without pusing to marking
> deque.
> 
> The mark-compact prologue then clears all normalized map caches.
> 
> We can achieve similar effect by just clearing the caches in the marking
> visitor.
> 
> BUG=chromium:694255
> 
> Review-Url: https://codereview.chromium.org/2745183002
> Cr-Commit-Position: refs/heads/master@{#43941}
> Committed:
https://chromium.googlesource.com/v8/v8/+/3d68306c71b17ebcb306b4e2ed8cae110c5...

TBR=hpayer@chromium.org,verwaest@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:694255

Review-Url: https://codereview.chromium.org/2771703003
Cr-Commit-Position: refs/heads/master@{#44056}
Committed:
https://chromium.googlesource.com/v8/v8/+/1a7a6057504cf57ee31a8513309898ca2cb...
==========

[commit-bot: I haz the power, 2017-03-23 09:28:14]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/1a7a6057504cf57ee31a8513309898ca2cb...