--- a/toolkit/components/telemetry/Histograms.json
+++ b/toolkit/components/telemetry/Histograms.json
@@ -3257,16 +3257,44 @@
   },
   "DNS_BLACKLIST_COUNT": {
     "expires_in_version": "never",
     "kind": "linear",
     "high": 21,
     "n_buckets": 20,
     "description": "The number of unusable addresses reported for each record"
   },
+  "LOOP_ICE_FINAL_CONNECTION_STATE":{
+    "0 = New",
+    "1 = Checking",
+    "2 = Connected",
+    "3 = Completed",
+    "4 = Failed",
+    "5 = Disconnected",
+    "6 = Closed"
+  },
+  "LOOP_CANDIDATE_TYPES_GIVEN_SUCCESS":{
+    "12": "Local Server Reflexive + Local UDP",
+    "13": "Remote Server Reflexive + Local Server Reflexive + Local UDP",
+    "15": "Remote Server Reflexive + Remote Relayed + Local Server Reflexive + Local UDP",
+    "16": "Local TCP",
+    "28": "Local Server Reflexive + Local UDP + Local TCP",
+    "39": "Remote Server Reflexive + Remote Relayed + Local Server Reflexive + Local TLS",
+    "30": "Remote Relayed + Local Server Reflexive + Local UDP + Local TCP",
+    "31": "Remote Server Reflexive + Remote Relayed + Local Server Reflexive + Local UDP + Local TCP"
+    },
+    "MIXED_CONTENT_PAGE_LOAD":{
+        "0": "No mixed content",
+        "1": "Mixed passive content",
+        "2": "Mixed active content",
+        "3": "Both mixed passive and mixed active content"
+    },
+    "SSL_CIPHER_SUITE_FULL":{
+    "Entries #8, 9, 47, 48, 68, and 69 correspond to ciphers that use RC4."
+    },
   "REFRESH_DRIVER_TICK" : {
     "expires_in_version": "never",
     "description": "Total time spent ticking the refresh driver in milliseconds",
     "kind": "exponential",
     "high": 1000,
     "n_buckets": 50
   },
   "PAINT_BUILD_DISPLAYLIST_TIME" : {