Add dialog to edit and save credit cards.

chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js

Index: chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js
diff --git a/chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js b/chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js
index 5d4de53de7c9d0f246fd238f3d0e65a10ad39f3b..e9f83d36927bd2c592403b2de1daa71110fc2b18 100644
--- a/chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js
+++ b/chrome/test/data/webui/settings/passwords_and_autofill_fake_data.js
@@ -67,6 +67,19 @@ FakeDataMaker.addressEntry = function() {
 };
 
 /**
+ * Creates a new empty credit card entry for testing.
+ * @return {!chrome.autofillPrivate.CreditCardEntry}
+ */
+FakeDataMaker.emptyCreditCardEntry = function() {
+  var now = new Date();
+  var expirationMonth = now.getMonth() + 1;
+  var ret = {};
+  ret.expirationMonth = expirationMonth.toString()
+  ret.expirationYear = now.getFullYear().toString();
+  return ret;
+};
+
+/**
  * Creates a new random credit card entry for testing.
  * @return {!chrome.autofillPrivate.CreditCardEntry}
  */
@@ -86,7 +99,7 @@ FakeDataMaker.creditCardEntry = function() {
 
 /**
  * Creates a new random GUID for testing.
- * @return {!string}
+ * @return {string}
  * @private
  */
 FakeDataMaker.makeGuid_ = function() {
@@ -96,9 +109,9 @@ FakeDataMaker.makeGuid_ = function() {
 
 /**
  * Replaces any 'x' in a string with a random number of the base.
- * @param {!string} pattern The pattern that should be used as an input.
- * @param {!number} base The number base. ie: 16 for hex or 10 for decimal.
- * @return {!string}
+ * @param {string} pattern The pattern that should be used as an input.
+ * @param {number} base The number base. ie: 16 for hex or 10 for decimal.
+ * @return {string}
  * @private
  */
 FakeDataMaker.patternMaker_ = function(pattern, base) {