Use precompiled dependencies in pub.

sdk/lib/_internal/pub_generated/lib/src/validator/license.dart

Index: sdk/lib/_internal/pub_generated/lib/src/validator/license.dart
diff --git a/sdk/lib/_internal/pub_generated/lib/src/validator/license.dart b/sdk/lib/_internal/pub_generated/lib/src/validator/license.dart
index 4ce5ff27dc638f183a0c606fbfb6cff95c3e031a..c32c5c9083ebe65d0a970660e345175329e145d9 100644
--- a/sdk/lib/_internal/pub_generated/lib/src/validator/license.dart
+++ b/sdk/lib/_internal/pub_generated/lib/src/validator/license.dart
@@ -2,7 +2,6 @@ library pub.validator.license;
 import 'dart:async';
 import 'package:path/path.dart' as path;
 import '../entrypoint.dart';
-import '../io.dart';
 import '../utils.dart';
 import '../validator.dart';
 class LicenseValidator extends Validator {
@@ -11,8 +10,8 @@ class LicenseValidator extends Validator {
     return new Future.sync(() {
       var licenseLike =
           new RegExp(r"^([a-zA-Z0-9]+[-_])?(LICENSE|COPYING)(\..*)?$");
-      if (listDir(
-          entrypoint.root.dir).map(path.basename).any(licenseLike.hasMatch)) {
+      if (entrypoint.root.listFiles(
+          recursive: false).map(path.basename).any(licenseLike.hasMatch)) {
         return;
       }
       errors.add(