Change ScheduledProcess's output streams over to be ScheduledStreams.

sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart

Index: sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart
diff --git a/sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart b/sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart
index d097e72a7bf323c0d4ff08315b1e568c379e5c27..85ce297148929a7716006b2178c42cb7deaa6d01 100644
--- a/sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart
+++ b/sdk/lib/_internal/pub/test/lish/force_publishes_if_there_are_warnings_test.dart
@@ -4,8 +4,9 @@
 
 import 'dart:convert';
 
-import 'package:scheduled_test/scheduled_test.dart';
 import 'package:scheduled_test/scheduled_server.dart';
+import 'package:scheduled_test/scheduled_stream.dart';
+import 'package:scheduled_test/scheduled_test.dart';
 
 import '../../lib/src/exit_codes.dart' as exit_codes;
 import '../descriptor.dart' as d;
@@ -36,11 +37,11 @@ main() {
     });
 
     pub.shouldExit(exit_codes.SUCCESS);
-    expect(pub.remainingStderr(), completion(contains(
-        'Suggestions:\n* Author "Nathan Weizenbaum" in pubspec.yaml'
-        ' should have an email address\n'
-        '  (e.g. "name <email>").')));
-    expect(pub.remainingStdout(), completion(contains(
-        'Package test_pkg 1.0.0 uploaded!')));
+    pub.stderr.expect(consumeThrough('Suggestions:'));
+    pub.stderr.expect(emitsLines(
+        '* Author "Nathan Weizenbaum" in pubspec.yaml should have an email '
+            'address\n'
+        '  (e.g. "name <email>").'));
+    pub.stdout.expect(consumeThrough('Package test_pkg 1.0.0 uploaded!'));
   });
 }