Add a key purpose parameter to Certificate PathBuilder.

net/tools/cert_verify_tool/verify_using_path_builder.cc

Index: net/tools/cert_verify_tool/verify_using_path_builder.cc
diff --git a/net/tools/cert_verify_tool/verify_using_path_builder.cc b/net/tools/cert_verify_tool/verify_using_path_builder.cc
index 271730646c68695fed64213aa90579ad0ac55fc7..6e2293a810fbac8db599844d541c7af35166013e 100644
--- a/net/tools/cert_verify_tool/verify_using_path_builder.cc
+++ b/net/tools/cert_verify_tool/verify_using_path_builder.cc
@@ -262,7 +262,8 @@ bool VerifyUsingPathBuilder(
   net::SimpleSignaturePolicy signature_policy(2048);
   net::CertPathBuilder::Result result;
   net::CertPathBuilder path_builder(target_cert, &trust_store,
-                                    &signature_policy, time, &result);
+                                    &signature_policy, time,
+                                    net::KeyPurpose::SERVER_AUTH, &result);
   path_builder.AddCertIssuerSource(&intermediate_cert_issuer_source);
 #if defined(USE_NSS_CERTS)
   net::CertIssuerSourceNSS cert_issuer_source_nss;