Add built-in root certificates to dart:io SecureSocket.

sdk/lib/_internal/compiler/implementation/lib/io_patch.dart

Index: sdk/lib/_internal/compiler/implementation/lib/io_patch.dart
diff --git a/sdk/lib/_internal/compiler/implementation/lib/io_patch.dart b/sdk/lib/_internal/compiler/implementation/lib/io_patch.dart
index 796bd98887930a893f21af09edd3584c362d547e..7a87745dff70da61181226b798a00dbdaa94d2d4 100644
--- a/sdk/lib/_internal/compiler/implementation/lib/io_patch.dart
+++ b/sdk/lib/_internal/compiler/implementation/lib/io_patch.dart
@@ -171,8 +171,9 @@ patch class Socket {
 }
 
 patch class SecureSocket {
-  patch static void setCertificateDatabase(String certificateDatabase,
-                                           [String password]) {
+  patch static void initialize({String database,
+                                String password,
+                                bool useBuiltinRoots: true}) {
     throw new UnsupportedError("SecureSocket.setCertificateDatabase");
   }
 }