Fix type annotation.

sdk/lib/_internal/pub_generated/test/test_pub.dart

 library test_pub;
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
 import 'dart:math';
 import 'package:http/testing.dart';
 import 'package:path/path.dart' as p;
 import 'package:scheduled_test/scheduled_process.dart';
 import 'package:scheduled_test/scheduled_server.dart';
 import 'package:scheduled_test/scheduled_stream.dart';
@@ skipping 265 matching lines @@
   pub.stdout.expect(startsWith('Publishing test_pkg 1.0.0 to '));
   pub.stdout.expect(
       emitsLines(
           "|-- LICENSE\n" "|-- lib\n" "|   '-- test_pkg.dart\n" "'-- pubspec.yaml\n" "\n"
               "Looks great! Are you ready to upload your package (y/n)?"));
   pub.writeLine("y");
 }
 String _pathInSandbox(String relPath) {
   return p.join(p.absolute(sandboxDir), relPath);
 }
-Map getPubTestEnvironment([Uri tokenEndpoint]) {
+Map getPubTestEnvironment([String tokenEndpoint]) {
   var environment = {};
   environment['_PUB_TESTING'] = 'true';
   environment['PUB_CACHE'] = _pathInSandbox(cachePath);
   environment['_PUB_TEST_SDK_VERSION'] = "0.1.2+3";
   if (tokenEndpoint != null) {
     environment['_PUB_TEST_TOKEN_ENDPOINT'] = tokenEndpoint.toString();
   }
   return environment;
 }
-ScheduledProcess startPub({List args, Future<Uri> tokenEndpoint}) {
+ScheduledProcess startPub({List args, Future<String> tokenEndpoint}) {
   ensureDir(_pathInSandbox(appPath));
   var dartBin = Platform.executable;
   if (dartBin.contains(Platform.pathSeparator)) {
     dartBin = p.absolute(dartBin);
   }
   var pubPath = p.join(p.dirname(dartBin), 'snapshots/pub.dart.snapshot');
   var dartArgs = [pubPath, '--verbose'];
   dartArgs.addAll(args);
   if (tokenEndpoint == null) tokenEndpoint = new Future.value();
   var environmentFuture = tokenEndpoint.then((tokenEndpoint) {
@@ skipping 293 matching lines @@
   bool matches(item, Map matchState) {
     if (item is! Pair) return false;
     return _firstMatcher.matches(item.first, matchState) &&
         _lastMatcher.matches(item.last, matchState);
   }
   Description describe(Description description) {
     return description.addAll("(", ", ", ")", [_firstMatcher, _lastMatcher]);
   }
 }
 StreamMatcher emitsLines(String output) => inOrder(output.split("\n"));