Revert of [heap] Fine-grained JSArrayBuffer tracking

Revert of [heap] Fine-grained JSArrayBuffer tracking (patchset #19 id:770001 of https://codereview.chromium.org/1964023002/ )

Reason for revert:
Revert it.

Original issue's description:
> [heap] Fine-grained JSArrayBuffer tracking
>
> Track based on JSArrayBuffer addresses instead of the attached backing store.
> This way we can later on iterate buffers on a single page. The reland also
> switches to a page-based implementation where a page contains the set of its
> contained (live and dead) buffers.
>
> Details of tracking:
> - Scavenge: New space pages are processes in bulk on the main thread
> - MC: Unswept pages are processed in bulk in parallel. All other pages
>   are processed by the sweeper concurrently.
>
> BUG=chromium:611688
> LOG=N
> CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
>
> Committed: https://crrev.com/b2d8bfc7931eef49d527605ba485950dea41cde3
> Cr-Commit-Position: refs/heads/master@{#36437}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688
Committed: https://crrev.com/d2dff0320b75bf6054e46c379b192619d4884caf
Cr-Commit-Position: refs/heads/master@{#36461}

[Michael Lippautz, 2016-05-24 07:21:00]

Created Revert of [heap] Fine-grained JSArrayBuffer tracking

[commit-bot: I haz the power, 2016-05-24 07:21:06]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2006183003/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/2006183003/1

[commit-bot: I haz the power, 2016-05-24 07:21:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-05-24 07:22:08]

Description was changed from

==========
Revert of [heap] Fine-grained JSArrayBuffer tracking (patchset #19 id:770001 of
https://codereview.chromium.org/1964023002/ )

Reason for revert:
Revert it.

Original issue's description:
> [heap] Fine-grained JSArrayBuffer tracking
> 
> Track based on JSArrayBuffer addresses instead of the attached backing store.
> This way we can later on iterate buffers on a single page. The reland also
> switches to a page-based implementation where a page contains the set of its
> contained (live and dead) buffers.
> 
> Details of tracking:
> - Scavenge: New space pages are processes in bulk on the main thread
> - MC: Unswept pages are processed in bulk in parallel. All other pages
>   are processed by the sweeper concurrently.
> 
> BUG=chromium:611688
> LOG=N
>
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
> 
> Committed: https://crrev.com/b2d8bfc7931eef49d527605ba485950dea41cde3
> Cr-Commit-Position: refs/heads/master@{#36437}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688
==========

to

==========
Revert of [heap] Fine-grained JSArrayBuffer tracking (patchset #19 id:770001 of
https://codereview.chromium.org/1964023002/ )

Reason for revert:
Revert it.

Original issue's description:
> [heap] Fine-grained JSArrayBuffer tracking
>
> Track based on JSArrayBuffer addresses instead of the attached backing store.
> This way we can later on iterate buffers on a single page. The reland also
> switches to a page-based implementation where a page contains the set of its
> contained (live and dead) buffers.
>
> Details of tracking:
> - Scavenge: New space pages are processes in bulk on the main thread
> - MC: Unswept pages are processed in bulk in parallel. All other pages
>   are processed by the sweeper concurrently.
>
> BUG=chromium:611688
> LOG=N
>
CQ_EXTRA_TRYBOTS=tryserver.v8:v8_linux_arm64_gc_stress_dbg,v8_linux_gc_stress_dbg,v8_mac_gc_stress_dbg,v8_linux64_tsan_rel,v8_mac64_asan_rel
>
> Committed: https://crrev.com/b2d8bfc7931eef49d527605ba485950dea41cde3
> Cr-Commit-Position: refs/heads/master@{#36437}

TBR=hpayer@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=chromium:611688

Committed: https://crrev.com/d2dff0320b75bf6054e46c379b192619d4884caf
Cr-Commit-Position: refs/heads/master@{#36461}
==========

[commit-bot: I haz the power, 2016-05-24 07:22:09]

Patchset 1 (id:??) landed as
https://crrev.com/d2dff0320b75bf6054e46c379b192619d4884caf
Cr-Commit-Position: refs/heads/master@{#36461}