[Payments] Handle clicking back on the CVC unmask dialog

[Payments] Handle clicking back on the CVC unmask dialog

Was previously crashing because the AutofillPaymentInstrument delegate
was not being reset properly on back navigation. Now it is.

BUG=715093
TEST=browser_tests

Review-Url: https://codereview.chromium.org/2844293002
Cr-Commit-Position: refs/heads/master@{#467747}
Committed: https://chromium.googlesource.com/chromium/src/+/f72420b280a531f5db4d636b8f1ad57cf20c9895

[Mathieu, 2017-04-27 14:21:40]

Description was changed from

==========
[Payments] Handle clicking back on the CVC unmask dialog

Was previously crashing because the AutofillPaymentInstrument delegate
was not being reset properly on back navigation. Now it is.

BUG=715093
TEST=
==========

to

==========
[Payments] Handle clicking back on the CVC unmask dialog

Was previously crashing because the AutofillPaymentInstrument delegate
was not being reset properly on back navigation. Now it is.

BUG=715093
TEST=browser_tests
==========

[Mathieu, 2017-04-27 14:21:40]

mathp@chromium.org changed reviewers:
+ anthonyvd@chromium.org

[Mathieu, 2017-04-27 14:21:48]

Anthony, PTAL

[anthonyvd, 2017-04-27 17:24:03]

lgtm

[Mathieu, 2017-04-27 17:27:05]

The CQ bit was checked by mathp@chromium.org

[commit-bot: I haz the power, 2017-04-27 17:27:46]

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, 2017-04-27 19:13:23]

CQ is committing da patch.

Bot data: {"patchset_id": 20001, "attempt_start_ts": 1493314025503590,
"parent_rev": "c693ba146941bf2baba7f2544f3ccb6349dd211f", "commit_rev":
"f72420b280a531f5db4d636b8f1ad57cf20c9895"}

[commit-bot: I haz the power, 2017-04-27 19:13:40]

Description was changed from

==========
[Payments] Handle clicking back on the CVC unmask dialog

Was previously crashing because the AutofillPaymentInstrument delegate
was not being reset properly on back navigation. Now it is.

BUG=715093
TEST=browser_tests
==========

to

==========
[Payments] Handle clicking back on the CVC unmask dialog

Was previously crashing because the AutofillPaymentInstrument delegate
was not being reset properly on back navigation. Now it is.

BUG=715093
TEST=browser_tests

Review-Url: https://codereview.chromium.org/2844293002
Cr-Commit-Position: refs/heads/master@{#467747}
Committed:
https://chromium.googlesource.com/chromium/src/+/f72420b280a531f5db4d636b8f1a...
==========

[commit-bot: I haz the power, 2017-04-27 19:13:41]

Committed patchset #2 (id:20001) as
https://chromium.googlesource.com/chromium/src/+/f72420b280a531f5db4d636b8f1a...