Add a key purpose parameter to Certificate PathBuilder.

net/BUILD.gn

Index: net/BUILD.gn
diff --git a/net/BUILD.gn b/net/BUILD.gn
index 472535caa1f9a8a71ab831df729d84d38935ee0b..bba5dd7dabc370b38004a8bf9007b8e3c29cc01e 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -3344,6 +3344,9 @@ bundle_data("net_unittests_bundle_data") {
     "data/verify_certificate_chain_unittest/intermediate-basic-constraints-not-critical.pem",
     "data/verify_certificate_chain_unittest/intermediate-lacks-basic-constraints.pem",
     "data/verify_certificate_chain_unittest/intermediate-lacks-signing-key-usage.pem",
+    "data/verify_certificate_chain_unittest/intermediate-restricts-eku-fail.pem",
+    "data/verify_certificate_chain_unittest/intermediate-restricts-eku-ok.pem",
+    "data/verify_certificate_chain_unittest/intermediate-sets-eku-any.pem",
     "data/verify_certificate_chain_unittest/intermediate-signed-with-md5.pem",
     "data/verify_certificate_chain_unittest/intermediate-unknown-critical-extension.pem",
     "data/verify_certificate_chain_unittest/intermediate-unknown-non-critical-extension.pem",
@@ -3357,7 +3360,10 @@ bundle_data("net_unittests_bundle_data") {
     "data/verify_certificate_chain_unittest/target-and-intermediate.pem",
     "data/verify_certificate_chain_unittest/target-has-keycertsign-but-not-ca.pem",
     "data/verify_certificate_chain_unittest/target-has-pathlen-but-not-ca.pem",
+    "data/verify_certificate_chain_unittest/target-lacks-eku.pem",
     "data/verify_certificate_chain_unittest/target-not-end-entity.pem",
+    "data/verify_certificate_chain_unittest/target-restricts-eku-fail.pem",
+    "data/verify_certificate_chain_unittest/target-sets-eku-any.pem",
     "data/verify_certificate_chain_unittest/target-signed-by-512bit-rsa.pem",
     "data/verify_certificate_chain_unittest/target-signed-using-ecdsa.pem",
     "data/verify_certificate_chain_unittest/target-signed-with-md5.pem",