Update order summary total when instruments change.

Update order summary total when instruments change.

If the user selects a payment instrument that matches a modifier, then
the order summary total should be updated. For example, if the merchant
provides discounts for "visa", then selecting a "visa" type card should
update the total accordingly.

This feature is behind chrome://flags#web-payments-modifiers flag.

BUG=660926
Committed: https://crrev.com/a16a3356e94a792374ddbeea5cada71d531e6ad4
Cr-Commit-Position: refs/heads/master@{#436492}

[please use gerrit instead, 2016-12-05 18:15:12]

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

[commit-bot: I haz the power, 2016-12-05 18:15:31]

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, 2016-12-05 18:25:26]

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

[please use gerrit instead, 2016-12-05 18:25:27]

tedchoc, ptal. 

The video of the UI change is in http://crbug.com/660926#c7.

[please use gerrit instead, 2016-12-05 18:25:49]

Description was changed from

==========
Update order summary total when instruments change.

If the user selects a payment instrument that matches a modifier, then
the order summary total should be updated. For example, if the merchant
provides discounts for "visa", then selecting a "visa" type card should
update the total accordingly.

BUG=660926
==========

to

==========
Update order summary total when instruments change.

If the user selects a payment instrument that matches a modifier, then
the order summary total should be updated. For example, if the merchant
provides discounts for "visa", then selecting a "visa" type card should
update the total accordingly.

This feature is behind chrome://flags#web-payments-modifiers flag.

BUG=660926
==========

[commit-bot: I haz the power, 2016-12-05 19:10:46]

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

[commit-bot: I haz the power, 2016-12-05 19:10:47]

Dry run: This issue passed the CQ dry run.

[Ted C, 2016-12-06 00:49:35]

lgtm

[please use gerrit instead, 2016-12-06 01:48:50]

The CQ bit was checked by rouslan@chromium.org

[commit-bot: I haz the power, 2016-12-06 01:49:31]

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, 2016-12-06 02:41:20]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1480988930418180, "parent_rev":
"2bc8d3e567a9ac9c11bf928b9fc34b0f4ef9f1fb", "commit_rev":
"29a779ab266eec5109b65f02310d800b78784b1a"}

[commit-bot: I haz the power, 2016-12-06 02:41:45]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-12-06 02:45:36]

Description was changed from

==========
Update order summary total when instruments change.

If the user selects a payment instrument that matches a modifier, then
the order summary total should be updated. For example, if the merchant
provides discounts for "visa", then selecting a "visa" type card should
update the total accordingly.

This feature is behind chrome://flags#web-payments-modifiers flag.

BUG=660926
==========

to

==========
Update order summary total when instruments change.

If the user selects a payment instrument that matches a modifier, then
the order summary total should be updated. For example, if the merchant
provides discounts for "visa", then selecting a "visa" type card should
update the total accordingly.

This feature is behind chrome://flags#web-payments-modifiers flag.

BUG=660926

Committed: https://crrev.com/a16a3356e94a792374ddbeea5cada71d531e6ad4
Cr-Commit-Position: refs/heads/master@{#436492}
==========

[commit-bot: I haz the power, 2016-12-06 02:45:37]

Patchset 1 (id:??) landed as
https://crrev.com/a16a3356e94a792374ddbeea5cada71d531e6ad4
Cr-Commit-Position: refs/heads/master@{#436492}