Fix some tests that were broken in the library tag removal.

test/dart2js/allows_import_in_dart_code_test.dart

Index: test/dart2js/allows_import_in_dart_code_test.dart
diff --git a/test/dart2js/allows_import_in_dart_code_test.dart b/test/dart2js/allows_import_in_dart_code_test.dart
index c9b2ba2a0f92435e7bfb61f74db295cc0cc9cd9c..d8de7b0b50fc1afae58ad4a3524935d5e92de49a 100644
--- a/test/dart2js/allows_import_in_dart_code_test.dart
+++ b/test/dart2js/allows_import_in_dart_code_test.dart
@@ -14,6 +14,7 @@ main() {
       d.libPubspec("foo", "0.0.1"),
       d.dir("lib", [
         d.file("foo.dart", """
+foo() => 'footext';
 """)
       ])
     ]).create();
@@ -24,6 +25,7 @@ main() {
       }),
       d.dir("lib", [
         d.file("lib.dart", """
+lib() => 'libtext';
 """)
       ]),
       d.dir("web", [