[Field trial] Update the testing config for AutofillCreditCardSigninPromo

testing/variations/fieldtrial_testing_config.json

Index: testing/variations/fieldtrial_testing_config.json
diff --git a/testing/variations/fieldtrial_testing_config.json b/testing/variations/fieldtrial_testing_config.json
index c55fd64a11b57ea2a7ceadc7c18034c744e90981..88a4a9d262e462a13c3da1f4b62f6aa14360ce07 100644
--- a/testing/variations/fieldtrial_testing_config.json
+++ b/testing/variations/fieldtrial_testing_config.json
@@ -84,6 +84,46 @@
             ]
         }
     ],
+    "AutofillCreditCardSigninPromo": [
+        {
+            "platforms": [
+                "android",
+                "chromeos",
+                "linux",
+                "mac",
+                "win"
+            ],
+            "experiments": [
+                {
+                    "name": "EnabledThree",

[rkaplow, 2016/10/04 16:53:45]

we only support a single experiment here. I'd suggest picking the one going
through the most experimentation / most likely to ship.

[Mathieu, 2016/10/04 16:54:57]

OK

+                    "params": {
+                        "impression_limit": "3"
+                    },
+                    "enable_features": [
+                        "AutofillCreditCardSigninPromo"
+                    ]
+                },
+                {
+                    "name": "EnabledFive",
+                    "params": {
+                        "impression_limit": "5"
+                    },
+                    "enable_features": [
+                        "AutofillCreditCardSigninPromo"
+                    ]
+                },
+                {
+                    "name": "EnabledTen",
+                    "params": {
+                        "impression_limit": "10"
+                    },
+                    "enable_features": [
+                        "AutofillCreditCardSigninPromo"
+                    ]
+                }
+            ]
+        }
+    ],
     "AutofillFieldMetadata": [
         {
             "platforms": [