Update from chromium https://crrev.com/302282

net/cert/x509_certificate_openssl.cc

Index: net/cert/x509_certificate_openssl.cc
diff --git a/net/cert/x509_certificate_openssl.cc b/net/cert/x509_certificate_openssl.cc
index 91501f84ecd8cb2d91354cdf47f38c2c54101b71..e92f3a190d5ce3d0cacab2a6498c41fdb6a3ef0b 100644
--- a/net/cert/x509_certificate_openssl.cc
+++ b/net/cert/x509_certificate_openssl.cc
@@ -449,4 +449,14 @@ bool X509Certificate::IsIssuedByEncoded(
   return false;
 }
 
+// static
+bool X509Certificate::IsSelfSigned(OSCertHandle cert_handle) {
+  crypto::ScopedEVP_PKEY scoped_key(X509_get_pubkey(cert_handle));
+  if (!scoped_key)
+    return false;
+
+  // NOTE: X509_verify() returns 1 in case of success, 0 or -1 on error.
+  return X509_verify(cert_handle, scoped_key.get()) == 1;
+}
+
 }  // namespace net