Don't implicitly run "pub get".

test/run/runs_shorthand_app_in_dependency_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.
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 main() {
   integration('runs a shorthand Dart application in a dependency', () {
     d.dir("foo", [
       d.libPubspec("foo", "1.0.0"),
       d.dir("bin", [
         d.file("foo.dart", "main() => print('foo');")
       ])
     ]).create();
 
     d.dir(appPath, [
       d.pubspec({
         "name": "myapp",
         "dependencies": {
           "foo": {"path": "../foo"}
         }
       })
     ]).create();
 
-    var pub = pubRun(args: ["foo"], shouldGetFirst: true);
+    pubGet();
+    var pub = pubRun(args: ["foo"]);
     pub.stdout.expect("foo");
     pub.shouldExit();
   });
 }