Surface SCT (Signed Certificate Timestamp) counts in the Security panel.

third_party/WebKit/Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 1224 matching lines @@
                 "type": "object",
                 "description": "Details about a request's certificate.",
                 "properties": [
                     { "name": "subject", "$ref": "CertificateSubject", "description": "Certificate subject." },
                     { "name": "issuer", "type": "string", "description": "Name of the issuing CA." },
                     { "name": "validFrom", "$ref": "Timestamp", "description": "Certificate valid from date." },
                     { "name": "validTo", "$ref": "Timestamp", "description": "Certificate valid to (expiration) date" }
                 ]
             },
             {
+                "id": "CertificateValidationDetails",
+                "type": "object",
+                "description": "Details about the validation status of a request's certificate.",
+                "properties": [
+                    { "name": "numUnknownScts", "type": "integer", "description": "The number of SCTs from unknown logs." },
+                    { "name": "numInvalidScts", "type": "integer", "description": "The number of invalid SCTs." },
+                    { "name": "numValidScts", "type": "integer", "description": "The number of valid SCTs." }
+                ]
+            },
+            {
                 "id": "SecurityDetails",
                 "type": "object",
                 "description": "Security details about a request.",
                 "properties": [
                     { "name": "protocol", "type": "string", "description": "Protocol name (e.g. \"TLS 1.2\" or \"QUIC\")." },
                     { "name": "keyExchange", "type": "string", "description": "Key Exchange used by the connection." },
                     { "name": "cipher", "type": "string", "description": "Cipher name." },
                     { "name": "mac", "type": "string", "optional": true, "description": "TLS MAC. Note that AEAD ciphers do not have separate MACs." },
-                    { "name": "certificateId", "$ref": "CertificateId", "description": "Certificate ID value." }
+                    { "name": "certificateId", "$ref": "CertificateId", "description": "Certificate ID value." },
+                    { "name": "certificateValidationDetails", "$ref": "CertificateValidationDetails", "optional": true, "description": "Validation details for the request's certficate." }
                 ]
             },
             {
                 "id": "BlockedReason",
                 "type": "string",
                 "description": "The reason why request was blocked.",
                 "enum": ["csp", "mixed-content", "origin", "inspector", "other"],
                 "hidden": true
             },
             {
@@ skipping 4065 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }