Revert of [wasm] WebAssembly.Memory object can be referenced by multiple Instance objects.

Revert of [wasm] WebAssembly.Memory object can be referenced by multiple Instance objects. (patchset #10 id:180001 of https://codereview.chromium.org/2471883003/ )

Reason for revert:
Breaks gc stress:
https://build.chromium.org/p/client.v8/builders/V8%20Linux%20-%20gc%20stress/builds/7114

Original issue's description:
> [wasm] WebAssembly.Memory object can be referenced by multiple Instance objects.
>
> Add support for WebAssembly.Memory objects to be simultaneously referenced by multiple Instance objects. GrowingMemory should maintain a consistent view of memory across instances.
>  - Store a link to instances that share WebAssembly.Memory in the WasmMemoryObject, updated on instantiate.
>  - Implement WasmInstanceWrapper as a wrapper around the instance object to keep track of previous/next instances, instance object is stored as a WeakCell that can be garbage collected.
>  - MemoryInstanceFinalizer maintains a valid list of instances when an instance is garbage collected.
>  - Refactor GrowInstanceMemory to GrowMemoryBuffer that allocates a new buffer, and UncheckedUpdateInstanceMemory that updates memory references for an instance.
>
>  R=titzer@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
>
> Committed: https://crrev.com/30ef8e33f3a199a27ca8512bcee314c9522d03f6
> Cr-Commit-Position: refs/heads/master@{#41121}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,titzer@chromium.org,gdeepti@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/682f6500ee040e6369fb7936e6bc53db49a135d0
Cr-Commit-Position: refs/heads/master@{#41122}

[Michael Achenbach, 2016-11-19 13:39:01]

The CQ bit was checked by machenbach@chromium.org

[Michael Achenbach, 2016-11-19 13:39:02]

Created Revert of [wasm] WebAssembly.Memory object can be referenced by multiple
Instance objects.

[commit-bot: I haz the power, 2016-11-19 13:39:08]

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, 2016-11-19 13:39:22]

Description was changed from

==========
Revert of [wasm] WebAssembly.Memory object can be referenced by multiple
Instance objects. (patchset #10 id:180001 of
https://codereview.chromium.org/2471883003/ )

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

Original issue's description:
> [wasm] WebAssembly.Memory object can be referenced by multiple Instance
objects.
> 
> Add support for WebAssembly.Memory objects to be simultaneously referenced by
multiple Instance objects. GrowingMemory should maintain a consistent view of
memory across instances.
>  - Store a link to instances that share WebAssembly.Memory in the
WasmMemoryObject, updated on instantiate.
>  - Implement WasmInstanceWrapper as a wrapper around the instance object to
keep track of previous/next instances, instance object is stored as a WeakCell
that can be garbage collected.
>  - MemoryInstanceFinalizer maintains a valid list of instances when an
instance is garbage collected.
>  - Refactor GrowInstanceMemory to GrowMemoryBuffer that allocates a new
buffer, and UncheckedUpdateInstanceMemory that updates memory references for an
instance.
> 
>  R=titzer@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
> 
> Committed: https://crrev.com/30ef8e33f3a199a27ca8512bcee314c9522d03f6
> Cr-Commit-Position: refs/heads/master@{#41121}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,titzer@chromium.org,gdeepti@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of [wasm] WebAssembly.Memory object can be referenced by multiple
Instance objects. (patchset #10 id:180001 of
https://codereview.chromium.org/2471883003/ )

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

Original issue's description:
> [wasm] WebAssembly.Memory object can be referenced by multiple Instance
objects.
> 
> Add support for WebAssembly.Memory objects to be simultaneously referenced by
multiple Instance objects. GrowingMemory should maintain a consistent view of
memory across instances.
>  - Store a link to instances that share WebAssembly.Memory in the
WasmMemoryObject, updated on instantiate.
>  - Implement WasmInstanceWrapper as a wrapper around the instance object to
keep track of previous/next instances, instance object is stored as a WeakCell
that can be garbage collected.
>  - MemoryInstanceFinalizer maintains a valid list of instances when an
instance is garbage collected.
>  - Refactor GrowInstanceMemory to GrowMemoryBuffer that allocates a new
buffer, and UncheckedUpdateInstanceMemory that updates memory references for an
instance.
> 
>  R=titzer@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
> 
> Committed: https://crrev.com/30ef8e33f3a199a27ca8512bcee314c9522d03f6
> Cr-Commit-Position: refs/heads/master@{#41121}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,titzer@chromium.org,gdeepti@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

[commit-bot: I haz the power, 2016-11-19 13:39:23]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-11-19 13:39:58]

Description was changed from

==========
Revert of [wasm] WebAssembly.Memory object can be referenced by multiple
Instance objects. (patchset #10 id:180001 of
https://codereview.chromium.org/2471883003/ )

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

Original issue's description:
> [wasm] WebAssembly.Memory object can be referenced by multiple Instance
objects.
> 
> Add support for WebAssembly.Memory objects to be simultaneously referenced by
multiple Instance objects. GrowingMemory should maintain a consistent view of
memory across instances.
>  - Store a link to instances that share WebAssembly.Memory in the
WasmMemoryObject, updated on instantiate.
>  - Implement WasmInstanceWrapper as a wrapper around the instance object to
keep track of previous/next instances, instance object is stored as a WeakCell
that can be garbage collected.
>  - MemoryInstanceFinalizer maintains a valid list of instances when an
instance is garbage collected.
>  - Refactor GrowInstanceMemory to GrowMemoryBuffer that allocates a new
buffer, and UncheckedUpdateInstanceMemory that updates memory references for an
instance.
> 
>  R=titzer@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
> 
> Committed: https://crrev.com/30ef8e33f3a199a27ca8512bcee314c9522d03f6
> Cr-Commit-Position: refs/heads/master@{#41121}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,titzer@chromium.org,gdeepti@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of [wasm] WebAssembly.Memory object can be referenced by multiple
Instance objects. (patchset #10 id:180001 of
https://codereview.chromium.org/2471883003/ )

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

Original issue's description:
> [wasm] WebAssembly.Memory object can be referenced by multiple Instance
objects.
>
> Add support for WebAssembly.Memory objects to be simultaneously referenced by
multiple Instance objects. GrowingMemory should maintain a consistent view of
memory across instances.
>  - Store a link to instances that share WebAssembly.Memory in the
WasmMemoryObject, updated on instantiate.
>  - Implement WasmInstanceWrapper as a wrapper around the instance object to
keep track of previous/next instances, instance object is stored as a WeakCell
that can be garbage collected.
>  - MemoryInstanceFinalizer maintains a valid list of instances when an
instance is garbage collected.
>  - Refactor GrowInstanceMemory to GrowMemoryBuffer that allocates a new
buffer, and UncheckedUpdateInstanceMemory that updates memory references for an
instance.
>
>  R=titzer@chromium.org, mtrofin@chromium.org, bradnelson@chromium.org
>
> Committed: https://crrev.com/30ef8e33f3a199a27ca8512bcee314c9522d03f6
> Cr-Commit-Position: refs/heads/master@{#41121}

TBR=bradnelson@chromium.org,mtrofin@chromium.org,titzer@chromium.org,gdeepti@...
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/682f6500ee040e6369fb7936e6bc53db49a135d0
Cr-Commit-Position: refs/heads/master@{#41122}
==========

[commit-bot: I haz the power, 2016-11-19 13:39:59]

Patchset 1 (id:??) landed as
https://crrev.com/682f6500ee040e6369fb7936e6bc53db49a135d0
Cr-Commit-Position: refs/heads/master@{#41122}