ChromeOS: Add more host verification options for OpenVpn.

components/onc/onc_constants.h

Index: components/onc/onc_constants.h
diff --git a/components/onc/onc_constants.h b/components/onc/onc_constants.h
index b114177e5c300f0c86627cffa0c047af0c2e567b..21c6b5a05e2793b294aa822a46aa71a0b4ba3240 100644
--- a/components/onc/onc_constants.h
+++ b/components/onc/onc_constants.h
@@ -288,8 +288,21 @@ ONC_EXPORT extern const char kStaticChallenge[];
 ONC_EXPORT extern const char kTLSAuthContents[];
 ONC_EXPORT extern const char kTLSRemote[];
 ONC_EXPORT extern const char kVerb[];
+ONC_EXPORT extern const char kVerifyHash[];
+ONC_EXPORT extern const char kVerifyX509[];
 }  // namespace openvpn
 
+namespace verify_x509 {
+ONC_EXPORT extern const char kName[];
+ONC_EXPORT extern const char kType[];
+
+namespace types {
+ONC_EXPORT extern const char kName[];
+ONC_EXPORT extern const char kNamePrefix[];
+ONC_EXPORT extern const char kSubject[];
+}  // namespace types
+}  // namespace verify_x509
+
 namespace substitutes {
 ONC_EXPORT extern const char kEmailField[];
 ONC_EXPORT extern const char kLoginIDField[];