Show progress spinner when waiting for shipping options update.

Show progress spinner when waiting for shipping options update.

When user selects a shipping option in PaymentRequest UI, show a
spinner. The merchant may need to round trip to a server to calculate
the total, which may take considerable time, especially on slow
networks.

BUG=637165
Committed: https://crrev.com/b06d2272aecb90f72d35c687fbd1ef22368762e6
Cr-Commit-Position: refs/heads/master@{#411785}

[please use gerrit instead, 2016-08-12 02:48:14]

The CQ bit was checked by rouslan@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-08-12 02:48:32]

Dry run: CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[please use gerrit instead, 2016-08-12 03:39:23]

rouslan@chromium.org changed reviewers:
+ dfalcantara@chromium.org

[please use gerrit instead, 2016-08-12 03:39:25]

dfalcantara, ptal.

[please use gerrit instead, 2016-08-12 03:39:46]

Video @ https://bugs.chromium.org/p/chromium/issues/attachment?aid=246622

[commit-bot: I haz the power, 2016-08-12 03:45:12]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-08-12 03:45:13]

Dry run: This issue passed the CQ dry run.

[gone, 2016-08-12 21:34:04]

lgtm

[please use gerrit instead, 2016-08-12 21:40:33]

The CQ bit was checked by rouslan@chromium.org

[commit-bot: I haz the power, 2016-08-12 21:41:14]

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, 2016-08-12 21:45:24]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-08-12 21:47:10]

Description was changed from

==========
Show progress spinner when waiting for shipping options update.

When user selects a shipping option in PaymentRequest UI, show a
spinner. The merchant may need to round trip to a server to calculate
the total, which may take considerable time, especially on slow
networks.

BUG=637165
==========

to

==========
Show progress spinner when waiting for shipping options update.

When user selects a shipping option in PaymentRequest UI, show a
spinner. The merchant may need to round trip to a server to calculate
the total, which may take considerable time, especially on slow
networks.

BUG=637165

Committed: https://crrev.com/b06d2272aecb90f72d35c687fbd1ef22368762e6
Cr-Commit-Position: refs/heads/master@{#411785}
==========

[commit-bot: I haz the power, 2016-08-12 21:47:11]

Patchset 1 (id:??) landed as
https://crrev.com/b06d2272aecb90f72d35c687fbd1ef22368762e6
Cr-Commit-Position: refs/heads/master@{#411785}