Implement modular compilation

test/samples/return_test.dart

Index: test/samples/return_test.dart
diff --git a/test/samples/return_test.dart b/test/samples/return_test.dart
deleted file mode 100644
index 4c9609d0f5d88f52f6480673b6546e721715b395..0000000000000000000000000000000000000000
--- a/test/samples/return_test.dart
+++ /dev/null
@@ -1,37 +0,0 @@
-// Copyright (c) 2015, 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.
-
-dynamic a = 42;
-
-// This requires a check / unbox.
-int get b => a;
-
-// This requires a type check.
-String c() => a;
-
-d() {
-  return a;
-}
-
-// This requires a type check.
-String e() {
-  return a;
-}
-
-class A {
-  A.named();
-
-  factory A() => a;
-}
-
-void main() {
-  print(a);
-  print(b);
-  a = "Hello";
-  print(c());
-  print(d());
-  print(e());
-  a = new A.named();
-  print(new A());
-}