Domain Reliability: Update mail.google.com config

components/domain_reliability/baked_in_configs/mail_google_com.json

Index: components/domain_reliability/baked_in_configs/mail_google_com.json
diff --git a/components/domain_reliability/baked_in_configs/mail_google_com.json b/components/domain_reliability/baked_in_configs/mail_google_com.json
index 4d43913ba86c35c28b5cdb852671777d383d321e..3dc51d497cf2a848357f340f1aa514819f752023 100644
--- a/components/domain_reliability/baked_in_configs/mail_google_com.json
+++ b/components/domain_reliability/baked_in_configs/mail_google_com.json
@@ -1,5 +1,5 @@
 {
-  "config_version": "mail-google-com $Revision: #5 $",
+  "config_version": "mail-google-com $Revision: #6 $",
   "config_valid_until": 1446336000,
   "monitored_domain": "mail.google.com",
   "collectors": [
@@ -27,6 +27,12 @@
       "failure_sample_rate": 1.00
     },
     {
+      "resource_name": "gmail-persistent",
+      "url_patterns": ["http*://mail.google.com/*/channel/bind*"],
+      "success_sample_rate": 0.05,
+      "failure_sample_rate": 1.00
+    },
+    {
       "resource_name": "gmail-other",
       "url_patterns": ["*"],
       "success_sample_rate": 0.05,