Revert of Internalize strings in-place

Revert of Internalize strings in-place (patchset #16 id:300001 of https://codereview.chromium.org/2549773002/ )

Reason for revert:
gc stress failures:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/builds/8024

Original issue's description:
> Internalize strings in-place
> 
> using newly introduced ThinStrings, which store a pointer to the actual,
> internalized string they represent.
> 
> BUG=v8:4520
> 
> Review-Url: https://codereview.chromium.org/2549773002
> Cr-Commit-Position: refs/heads/master@{#42168}
> Committed: https://chromium.googlesource.com/v8/v8/+/af51befe694fe039db3554d4b9165f7d6baceb77

TBR=ishell@chromium.org,hpayer@chromium.org,bmeurer@chromium.org,jkummerow@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4520
Review-Url: https://codereview.chromium.org/2621913002
Cr-Commit-Position: refs/heads/master@{#42170}
Committed: https://chromium.googlesource.com/v8/v8/+/32c0dff26322af95eb761764d1c1f60336d4a760

[Michael Achenbach, 2017-01-10 11:32:39]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2017-01-10 11:32:40]

Created Revert of Internalize strings in-place

[commit-bot: I haz the power, 2017-01-10 11:32:46]

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, 2017-01-10 11:33:05]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1484047959624710, "parent_rev":
"b23377620893d29c0b2be944e035ce85358e11f6", "commit_rev":
"32c0dff26322af95eb761764d1c1f60336d4a760"}

[commit-bot: I haz the power, 2017-01-10 11:33:11]

Description was changed from

==========
Revert of Internalize strings in-place (patchset #16 id:300001 of
https://codereview.chromium.org/2549773002/ )

Reason for revert:
gc stress failures:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/...

Original issue's description:
> Internalize strings in-place
> 
> using newly introduced ThinStrings, which store a pointer to the actual,
> internalized string they represent.
> 
> BUG=v8:4520
> 
> Review-Url: https://codereview.chromium.org/2549773002
> Cr-Commit-Position: refs/heads/master@{#42168}
> Committed:
https://chromium.googlesource.com/v8/v8/+/af51befe694fe039db3554d4b9165f7d6ba...

TBR=ishell@chromium.org,hpayer@chromium.org,bmeurer@chromium.org,jkummerow@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4520
==========

to

==========
Revert of Internalize strings in-place (patchset #16 id:300001 of
https://codereview.chromium.org/2549773002/ )

Reason for revert:
gc stress failures:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/...

Original issue's description:
> Internalize strings in-place
> 
> using newly introduced ThinStrings, which store a pointer to the actual,
> internalized string they represent.
> 
> BUG=v8:4520
> 
> Review-Url: https://codereview.chromium.org/2549773002
> Cr-Commit-Position: refs/heads/master@{#42168}
> Committed:
https://chromium.googlesource.com/v8/v8/+/af51befe694fe039db3554d4b9165f7d6ba...

TBR=ishell@chromium.org,hpayer@chromium.org,bmeurer@chromium.org,jkummerow@ch...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4520

Review-Url: https://codereview.chromium.org/2621913002
Cr-Commit-Position: refs/heads/master@{#42170}
Committed:
https://chromium.googlesource.com/v8/v8/+/32c0dff26322af95eb761764d1c1f60336d...
==========

[commit-bot: I haz the power, 2017-01-10 11:33:12]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/v8/v8/+/32c0dff26322af95eb761764d1c1f60336d...