Revert of Move stack trace extraction code out of TickSample::Init

Revert of Move stack trace extraction code out of TickSample::Init (patchset #1 id:1 of https://codereview.chromium.org/2007343003/ )

Reason for revert:
Make MSAN arm bot flaky

Original issue's description:
> Move stack trace extraction code out of TickSample::Init
>
> Make it a part of V8 API GetStackSample function.
> Also expose external_callback_entry in SampleInfo to break dependency
> of clients on internal V8 structures.
>
> BUG=v8:4789
>
> Committed: https://crrev.com/70acfe39c07322144f5fe9b40bb584a8b1099ffd
> Cr-Commit-Position: refs/heads/master@{#36831}

TBR=yangguo@chromium.org,lpy@chromium.org,jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
Committed: https://crrev.com/9ac4a6efa9a732be2c1c2cb729bc992a2322520a
Cr-Commit-Position: refs/heads/master@{#36835}

[alph, 2016-06-08 19:47:16]

The CQ bit was checked by alph@chromium.org

[alph, 2016-06-08 19:47:16]

Created Revert of Move stack trace extraction code out of TickSample::Init

[commit-bot: I haz the power, 2016-06-08 19:47:21]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/2049903002/1

[commit-bot: I haz the power, 2016-06-08 19:47:35]

Description was changed from

==========
Revert of Move stack trace extraction code out of TickSample::Init (patchset #1
id:1 of https://codereview.chromium.org/2007343003/ )

Reason for revert:
Make MSAN arm bot flaky

Original issue's description:
> Move stack trace extraction code out of TickSample::Init
> 
> Make it a part of V8 API GetStackSample function.
> Also expose external_callback_entry in SampleInfo to break dependency
> of clients on internal V8 structures.
> 
> BUG=v8:4789
> 
> Committed: https://crrev.com/70acfe39c07322144f5fe9b40bb584a8b1099ffd
> Cr-Commit-Position: refs/heads/master@{#36831}

TBR=yangguo@chromium.org,lpy@chromium.org,jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
==========

to

==========
Revert of Move stack trace extraction code out of TickSample::Init (patchset #1
id:1 of https://codereview.chromium.org/2007343003/ )

Reason for revert:
Make MSAN arm bot flaky

Original issue's description:
> Move stack trace extraction code out of TickSample::Init
> 
> Make it a part of V8 API GetStackSample function.
> Also expose external_callback_entry in SampleInfo to break dependency
> of clients on internal V8 structures.
> 
> BUG=v8:4789
> 
> Committed: https://crrev.com/70acfe39c07322144f5fe9b40bb584a8b1099ffd
> Cr-Commit-Position: refs/heads/master@{#36831}

TBR=yangguo@chromium.org,lpy@chromium.org,jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
==========

[commit-bot: I haz the power, 2016-06-08 19:47:36]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-06-08 19:48:42]

Description was changed from

==========
Revert of Move stack trace extraction code out of TickSample::Init (patchset #1
id:1 of https://codereview.chromium.org/2007343003/ )

Reason for revert:
Make MSAN arm bot flaky

Original issue's description:
> Move stack trace extraction code out of TickSample::Init
> 
> Make it a part of V8 API GetStackSample function.
> Also expose external_callback_entry in SampleInfo to break dependency
> of clients on internal V8 structures.
> 
> BUG=v8:4789
> 
> Committed: https://crrev.com/70acfe39c07322144f5fe9b40bb584a8b1099ffd
> Cr-Commit-Position: refs/heads/master@{#36831}

TBR=yangguo@chromium.org,lpy@chromium.org,jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789
==========

to

==========
Revert of Move stack trace extraction code out of TickSample::Init (patchset #1
id:1 of https://codereview.chromium.org/2007343003/ )

Reason for revert:
Make MSAN arm bot flaky

Original issue's description:
> Move stack trace extraction code out of TickSample::Init
>
> Make it a part of V8 API GetStackSample function.
> Also expose external_callback_entry in SampleInfo to break dependency
> of clients on internal V8 structures.
>
> BUG=v8:4789
>
> Committed: https://crrev.com/70acfe39c07322144f5fe9b40bb584a8b1099ffd
> Cr-Commit-Position: refs/heads/master@{#36831}

TBR=yangguo@chromium.org,lpy@chromium.org,jochen@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=v8:4789

Committed: https://crrev.com/9ac4a6efa9a732be2c1c2cb729bc992a2322520a
Cr-Commit-Position: refs/heads/master@{#36835}
==========

[commit-bot: I haz the power, 2016-06-08 19:48:44]

Patchset 1 (id:??) landed as
https://crrev.com/9ac4a6efa9a732be2c1c2cb729bc992a2322520a
Cr-Commit-Position: refs/heads/master@{#36835}