Support "--checked" in pub run and global run.

test/global/run/runs_script_in_checked_mode_test.dart

 // Copyright (c) 2014, 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.
 
-library pub_tests;
-
-import 'dart:io';
-
 import 'package:scheduled_test/scheduled_test.dart';
+import 'package:scheduled_test/scheduled_stream.dart';
 
 import '../../descriptor.dart' as d;
 import '../../test_pub.dart';
 
 main() {
-  integration('handles a corrupted binstub script', () {
+  integration('runs a script in checked mode', () {
     servePackages((builder) {
       builder.serve("foo", "1.0.0", contents: [
         d.dir("bin", [
-          d.file("script.dart", "main(args) => print('ok');")
+          d.file("script.dart", "main() { int a = true; }")
         ])
       ]);
     });
 
     schedulePub(args: ["global", "activate", "foo"]);
 
-    d.dir(cachePath, [
-      d.dir('bin', [
-        d.file(binStubName('script'), 'junk')
-      ])
-    ]).create();
-
-    schedulePub(args: ["cache", "repair"],
-        error: contains('Error reading binstub for "script":'));
+    var pub = pubRun(global: true, args: ["--checked", "foo:script"]);
+    pub.stderr.expect(consumeThrough(contains(
+        "'bool' is not a subtype of type 'int' of 'a'")));
+    pub.shouldExit(255);
   });
 }