Gracefully handle NULL CertVerifiers in SSLClientSocket.

net/socket/ssl_client_socket_unittest.cc

Index: net/socket/ssl_client_socket_unittest.cc
diff --git a/net/socket/ssl_client_socket_unittest.cc b/net/socket/ssl_client_socket_unittest.cc
index a41903efe1b1620487d61e16821ad299ad41a158..95907bb303a70701738ed0685bdca2e73c581be2 100644
--- a/net/socket/ssl_client_socket_unittest.cc
+++ b/net/socket/ssl_client_socket_unittest.cc
@@ -1231,6 +1231,17 @@ TEST_F(SSLClientSocketTest, ConnectClientAuthSendNullCert) {
   EXPECT_FALSE(sock->IsConnected());
 }
 
+TEST_F(SSLClientSocketTest, ConnectNoVerifier) {
+  context_.cert_verifier = nullptr;
+
+  SpawnedTestServer::SSLOptions ssl_options;
+  ASSERT_TRUE(ConnectToTestServer(ssl_options));
+  SSLConfig ssl_config;
+  int rv;
+  ASSERT_TRUE(CreateAndConnectSSLClientSocket(ssl_config, &rv));
+  EXPECT_EQ(ERR_CERT_INVALID, rv);
+}
+
 // TODO(wtc): Add unit tests for IsConnectedAndIdle:
 //   - Server closes an SSL connection (with a close_notify alert message).
 //   - Server closes the underlying TCP connection directly.