Add Finch testing configs for ReportCertificateErrors study

testing/variations/fieldtrial_testing_config_win.json

Index: testing/variations/fieldtrial_testing_config_win.json
diff --git a/testing/variations/fieldtrial_testing_config_win.json b/testing/variations/fieldtrial_testing_config_win.json
index fb5dd7af39b86a53e2ed74d1452f9bd73b376c07..e784e0ba9189a25619dbbfdeb46fbccf1e8145e3 100644
--- a/testing/variations/fieldtrial_testing_config_win.json
+++ b/testing/variations/fieldtrial_testing_config_win.json
@@ -79,5 +79,34 @@
         {
             "group_name": "enforce_always_with_extensions_and_dse"
         }
+    ],
+    "ReportCertificateErrors": [
+        {
+            "group_name": "ShowAndPossiblySend",
+            "params": {
+                "sendingThreshold": "1.0"
+            }
+        },
+        {
+            "group_name": "ShowAndPossiblySend",
+            "params": {
+                "sendingThreshold": "-1.0"
+            }
+        },
+        {
+            "group_name": "ShowAndPossiblySend",
+            "params": {
+                "sendingThreshold": "0.0"
+            }
+        },
+        {
+            "group_name": "ShowAndPossiblySend",
+            "params": {
+                "sendingThreshold": "abcdef"
+            }
+        },
+        {
+            "group_name": "DontShowAndDontSend"
+        }
     ]
 }