Do not do Expect-Staple when OCSPVerifyResult has not been populated

net/cert/ocsp_verify_result.h

Index: net/cert/ocsp_verify_result.h
diff --git a/net/cert/ocsp_verify_result.h b/net/cert/ocsp_verify_result.h
index a4dc71e80e2dda65e373efed02fc5b2675613df5..3a0bd7c26e35fb84c46b67faeabe3543182fe44a 100644
--- a/net/cert/ocsp_verify_result.h
+++ b/net/cert/ocsp_verify_result.h
@@ -27,6 +27,9 @@ struct NET_EXPORT OCSPVerifyResult {
   bool operator==(const OCSPVerifyResult& other) const;
 
   enum ResponseStatus {
+    // OCSP verification was not checked on this connection.
+    NOT_CHECKED,
+
     // No OCSPResponse was stapled.
     MISSING,
 
@@ -56,7 +59,7 @@ struct NET_EXPORT OCSPVerifyResult {
 
   };
 
-  ResponseStatus response_status = MISSING;
+  ResponseStatus response_status = NOT_CHECKED;
 
   // The strictest CertStatus matching the certificate (REVOKED > UNKNOWN >
   // GOOD). Only valid if |response_status| = PROVIDED.