Prepare for development branch by updating externally-used API.

pkg/compiler/lib/src/kernel/fasta_support.dart

 // Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 /// Additions to Fasta for generating .dill (Kernel IR) files with dart2js patch
 /// files and native hooks.
 library compiler.src.kernel.fasta_support;
 
 // TODO(sigmund): get rid of this file. Fasta should be agnostic of the
 // target platform, at which point this should not be necessary. In particular,
@@ skipping 116 matching lines @@
 /// uses it a slightly different form. We hope to remove this syntax in our
 /// dart2js patch files and replace it with the external modifier.
 Token _skipNative(Token token) {
   if (!optional("native", token)) return null;
   if (!optional(";", token.next)) return null;
   return token;
 }
 
 void _loadExtras(Loader loader) {
   for (String uri in _extraDart2jsLibraries) {
-    loader.read(Uri.parse(uri));
+    loader.read(Uri.parse(uri), -1);
   }
 }
 
 const _extraDart2jsLibraries = const <String>[
   'dart:_chrome',
   'dart:_foreign_helper',
   'dart:_interceptors',
   'dart:_internal',
   'dart:_isolate_helper',
   'dart:_js_embedded_names',
   'dart:_js_helper',
   'dart:_js_mirrors',
   'dart:_js_names',
   'dart:_native_typed_data',
   'dart:async',
   'dart:collection',
   'dart:html',
   'dart:html_common',
   'dart:indexed_db',
   'dart:js',
   'dart:js_util',
   'dart:mirrors',
   'dart:svg',
   'dart:web_audio',
   'dart:web_gl',
   'dart:web_sql',
 ];