[rac] Show amex-specific cvc hint for saved autofill card

[rac] Show amex-specific cvc hint for saved autofill card

This patch uses the amex-specific cvc icon for saved autofill card.

Autofill card stores and returns the credit card type in human-readable
format (eg "Visa"), but AutofillDailogControllerImpl expected a
WebKit-readable string instead (eg "visaCC"). This discrepancy caused the
autofill dialog to show a generic cvc icon for a saved amex card.

This patch changes WalletItems to return human-readable credit card types
to match Autofill. The patch also changes AutofillDailogControllerImpl to
check for human-readable format instead of the Webkit-readable format. As
a result, the saved autofill card now displays the amex-specific cvc icon
for a saved amex card.

Manual tests:
1) Save two cards in autofill: amex and visa.
2) Invoke rac dialog and switch to autofill mode.
3) Switch to saved amex card: cvc icon should be amex-specific.
4) Switch to saved visa card: cvc icon should be generic.

This patch depends on http://codereview.chromium.org/23756007.

BUG=250853
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=223999

[please use gerrit instead, 2013-09-18 18:44:32]

Evan: PTAL.

[Evan Stade, 2013-09-18 21:27:11]

lgtm

[commit-bot: I haz the power, 2013-09-18 21:29:41]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/rouslan@chromium.org/23510010/1

[commit-bot: I haz the power, 2013-09-19 00:42:10]

Change committed as 223999