Fix a reachable LOG(ERROR) from path builder unit-test.

net/cert/internal/path_builder_verify_certificate_chain_unittest.cc

Index: net/cert/internal/path_builder_verify_certificate_chain_unittest.cc
diff --git a/net/cert/internal/path_builder_verify_certificate_chain_unittest.cc b/net/cert/internal/path_builder_verify_certificate_chain_unittest.cc
index e6dfa424ef5999defc2251526af31e8c4105b78c..ca3d81bd030240f166ff6760176b4b7812a957cc 100644
--- a/net/cert/internal/path_builder_verify_certificate_chain_unittest.cc
+++ b/net/cert/internal/path_builder_verify_certificate_chain_unittest.cc
@@ -30,7 +30,7 @@ class PathBuilderDelegate {
         trust_store.AddTrustAnchorWithConstraints(test.chain.back());
         break;
       case CertificateTrustType::UNSPECIFIED:
-        LOG(ERROR) << "Unexpected CertificateTrustType";
+        trust_store.AddCertificateWithUnspecifiedTrust(test.chain.back());
         break;
       case CertificateTrustType::DISTRUSTED:
         trust_store.AddDistrustedCertificateForTest(test.chain.back());