Add flag to pub serve to disable dart2js.

sdk/lib/_internal/pub/test/serve/utils.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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:async';
 
 import 'package:http/http.dart' as http;
 import 'package:scheduled_test/scheduled_process.dart';
@@ skipping 70 matching lines @@
       })));
     });
   }
 }
 """;
 }
 
 /// Schedules starting the "pub serve" process.
 ///
 /// If [shouldInstallFirst] is `true`, validates that pub install is run first.
+/// If [dart2js] is `false` does not compiles Dart entrypoints in "web" to

[nweiz, 2013/10/04 20:26:10]

Comma after "`false`", "compiles" -> "compile".

[Bob Nystrom, 2013/10/04 23:23:59]

Done.

+/// JavaScript.
 ///
 /// Returns the `pub serve` process.
-ScheduledProcess startPubServe({bool shouldInstallFirst: false}) {
+ScheduledProcess startPubServe({bool shouldInstallFirst: false,
+    bool dart2js: true}) {
+
   // Use port 0 to get an ephemeral port.
-  _pubServer = startPub(args: ["serve", "--port=0", "--hostname=127.0.0.1"]);
+  var args = ["serve", "--port=0", "--hostname=127.0.0.1"];
+
+  if (!dart2js) args.add("--no-dart2js");
+
+  _pubServer = startPub(args: args);
 
   if (shouldInstallFirst) {
     expect(_pubServer.nextLine(),
         completion(startsWith("Dependencies have changed")));
     expect(_pubServer.nextLine(),
         completion(startsWith("Resolving dependencies...")));
     expect(_pubServer.nextLine(),
         completion(equals("Dependencies installed!")));
   }
 
@@ skipping 55 matching lines @@
     return _pubServer.nextLine().then((line) {
       if (line.contains("successfully")) return;
 
       // This line wasn't it, so ignore it and keep trying.
       return nextLine();
     });
   }
 
   schedule(nextLine);
 }