Revert of [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to ARC.

Revert of [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to ARC. (patchset #3 id:40001 of https://codereview.chromium.org/2810193004/ )

Reason for revert:
Causes crashes of ios_chrome_integration_egtests, ios_chrome_settings_egtests, and ios_chrome_ui_egtests test suites. Ref: https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/27109

Original issue's description:
> [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to ARC.
> 
> Automatically generated ARCMigrate commit
> Notable issues:None
> BUG=624363
> TEST=None
> 
> Review-Url: https://codereview.chromium.org/2810193004
> Cr-Commit-Position: refs/heads/master@{#468634}
> Committed: https://chromium.googlesource.com/chromium/src/+/ba4d7df1bcc063577dc66378f7465120fce5468a

TBR=marq@chromium.org,stkhapugin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624363
Review-Url: https://codereview.chromium.org/2859503002
Cr-Commit-Position: refs/heads/master@{#468664}
Committed: https://chromium.googlesource.com/chromium/src/+/740ceaa120d7b3d03450bb801e59208a2a645cad

[michaeldo, 2017-05-02 16:13:51]

The CQ bit was checked by michaeldo@chromium.org

[michaeldo, 2017-05-02 16:13:51]

Created Revert of [ObjC ARC] Converts
ios/chrome/browser/ui/stack_view:stack_view to ARC.

[commit-bot: I haz the power, 2017-05-02 16:14:17]

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, 2017-05-02 16:16:43]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1493741631480520, "parent_rev":
"f28ce883dc828c47c41e4c99ff886baa9f31f118", "commit_rev":
"740ceaa120d7b3d03450bb801e59208a2a645cad"}

[commit-bot: I haz the power, 2017-05-02 16:16:57]

Description was changed from

==========
Revert of [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to
ARC. (patchset #3 id:40001 of https://codereview.chromium.org/2810193004/ )

Reason for revert:
Causes crashes of ios_chrome_integration_egtests, ios_chrome_settings_egtests,
and ios_chrome_ui_egtests test suites. Ref:
https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/27109

Original issue's description:
> [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to ARC.
> 
> Automatically generated ARCMigrate commit
> Notable issues:None
> BUG=624363
> TEST=None
> 
> Review-Url: https://codereview.chromium.org/2810193004
> Cr-Commit-Position: refs/heads/master@{#468634}
> Committed:
https://chromium.googlesource.com/chromium/src/+/ba4d7df1bcc063577dc66378f746...

TBR=marq@chromium.org,stkhapugin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624363
==========

to

==========
Revert of [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to
ARC. (patchset #3 id:40001 of https://codereview.chromium.org/2810193004/ )

Reason for revert:
Causes crashes of ios_chrome_integration_egtests, ios_chrome_settings_egtests,
and ios_chrome_ui_egtests test suites. Ref:
https://build.chromium.org/p/chromium.fyi/builders/EarlGreyiOS/builds/27109

Original issue's description:
> [ObjC ARC] Converts ios/chrome/browser/ui/stack_view:stack_view to ARC.
> 
> Automatically generated ARCMigrate commit
> Notable issues:None
> BUG=624363
> TEST=None
> 
> Review-Url: https://codereview.chromium.org/2810193004
> Cr-Commit-Position: refs/heads/master@{#468634}
> Committed:
https://chromium.googlesource.com/chromium/src/+/ba4d7df1bcc063577dc66378f746...

TBR=marq@chromium.org,stkhapugin@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=624363

Review-Url: https://codereview.chromium.org/2859503002
Cr-Commit-Position: refs/heads/master@{#468664}
Committed:
https://chromium.googlesource.com/chromium/src/+/740ceaa120d7b3d03450bb801e59...
==========

[commit-bot: I haz the power, 2017-05-02 16:16:58]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/740ceaa120d7b3d03450bb801e59...