Add a key purpose parameter to Certificate PathBuilder.

net/cert/internal/verify_certificate_chain_unittest.cc

Index: net/cert/internal/verify_certificate_chain_unittest.cc
diff --git a/net/cert/internal/verify_certificate_chain_unittest.cc b/net/cert/internal/verify_certificate_chain_unittest.cc
index 7a162b89975ba72ddf8ff3c45a3b523ccf6b4b6d..62d3b3b3bbe86042dc3fc92a59a99c6eff7ba097 100644
--- a/net/cert/internal/verify_certificate_chain_unittest.cc
+++ b/net/cert/internal/verify_certificate_chain_unittest.cc
@@ -22,7 +22,8 @@ class VerifyCertificateChainDelegate {
 
     CertPathErrors errors;
     bool result = VerifyCertificateChain(test.chain, test.trust_anchor.get(),
-                                         &signature_policy, test.time, &errors);
+                                         &signature_policy, test.time,
+                                         test.key_purpose, &errors);
     EXPECT_EQ(test.expected_result, result);
     EXPECT_EQ(test.expected_errors, errors.ToDebugString(test.chain))
         << "Test file: " << test_file_path;