Add a "pub deploy" command.

sdk/lib/_internal/pub/test/deploy/with_no_web_directory.dart

Index: sdk/lib/_internal/pub/test/deploy/with_no_web_directory.dart
diff --git a/sdk/lib/_internal/pub/test/deploy/with_no_web_directory.dart b/sdk/lib/_internal/pub/test/deploy/with_no_web_directory.dart
new file mode 100644
index 0000000000000000000000000000000000000000..27c37663e8245b391f1ce6e004f6f3310a668363
--- /dev/null
+++ b/sdk/lib/_internal/pub/test/deploy/with_no_web_directory.dart
@@ -0,0 +1,18 @@
+// Copyright (c) 2013, 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() {
+  initConfig();
+
+  integration("with no web directory", () {
+    d.appDir([]).create();

[Andrei Mouravski, 2013/05/10 21:56:34]

Add a different folder in that looks like web but isn't, maybe?

[nweiz, 2013/05/13 21:59:45]

What does "looks like web" mean? I don't think it's likely that we'll start
accidentally deploying from a directory named "wep".

[Andrei Mouravski, 2013/05/13 22:40:33]

I have no idea what I was talking about. x_x

+
+    schedulePub(args: ["deploy"],
+        error: new RegExp(r"^There is no '[^']+[/\\]web' directory.$"),
+        exitCode: 1);
+  });
+}