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 6320cca600b097b33eb522b3e2e92b91d91cb314..2a7a44f9b0655d777ed8295c42f78c4bed907ad9 100644
--- a/net/BUILD.gn
+++ b/net/BUILD.gn
@@ -3381,6 +3381,7 @@ bundle_data("net_unittests_bundle_data") {
     "data/url_request_unittest/with-headers.html.mock-http-headers",
     "data/verify_certificate_chain_unittest/basic-constraints-pathlen-0-self-issued.pem",
     "data/verify_certificate_chain_unittest/constrained-non-self-signed-root.pem",
+    "data/verify_certificate_chain_unittest/constrained-root-bad-eku.pem",
     "data/verify_certificate_chain_unittest/constrained-root-basic-constraints-ca-false.pem",
     "data/verify_certificate_chain_unittest/constrained-root-lacks-basic-constraints.pem",
     "data/verify_certificate_chain_unittest/expired-constrained-root.pem",
@@ -3393,6 +3394,9 @@ 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",
@@ -3406,13 +3410,17 @@ 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",
     "data/verify_certificate_chain_unittest/target-unknown-critical-extension.pem",
     "data/verify_certificate_chain_unittest/target-wrong-signature.pem",
     "data/verify_certificate_chain_unittest/unconstrained-non-self-signed-root.pem",
+    "data/verify_certificate_chain_unittest/unconstrained-root-bad-eku.pem",
     "data/verify_certificate_chain_unittest/unconstrained-root-basic-constraints-ca-false.pem",
     "data/verify_certificate_chain_unittest/unconstrained-root-lacks-basic-constraints.pem",
     "data/verify_certificate_chain_unittest/violates-basic-constraints-pathlen-0.pem",