Adds SecurityContext.setTrustedCertificatesBytes

runtime/bin/secure_socket_patch.dart

Index: runtime/bin/secure_socket_patch.dart
diff --git a/runtime/bin/secure_socket_patch.dart b/runtime/bin/secure_socket_patch.dart
index 8ba011730efb74756fb18cb97bb820b9f709b64c..46a8c7871dd91b18a7465e5ce4b9b7ab68cb8488 100644
--- a/runtime/bin/secure_socket_patch.dart
+++ b/runtime/bin/secure_socket_patch.dart
@@ -144,8 +144,13 @@ class _SecurityContext
   }
   void usePrivateKeyBytes(List<int> keyBytes, {String password})
       native "SecurityContext_UsePrivateKeyBytes";
-  void setTrustedCertificates({String file, String directory})
-      native "SecurityContext_SetTrustedCertificates";
+  Future setTrustedCertificates(String file) {
+    return (new File(file)).readAsBytes().then((bytes) {
+      setTrustedCertificatesBytes(bytes);
+    });
+  }
+  void setTrustedCertificatesBytes(List<int> certBytes)
+      native "SecurityContext_SetTrustedCertificatesBytes";
   Future useCertificateChain(String chainFile) {
     return (new File(chainFile)).readAsBytes().then((bytes) {
       useCertificateChainBytes(bytes);