Revert "Parts must start with 'part of'" and "Attempt to fix VM build"

dart/tests/lib/crypto/sha256_test.dart

Index: dart/tests/lib/crypto/sha256_test.dart
diff --git a/dart/tests/lib/crypto/sha256_test.dart b/dart/tests/lib/crypto/sha256_test.dart
index cf44ef8e8d07371f48b4dc303aae9feaa524b04f..db4ebe235294a3dc88bd4693a43447208c83844d 100644
--- a/dart/tests/lib/crypto/sha256_test.dart
+++ b/dart/tests/lib/crypto/sha256_test.dart
@@ -3,12 +3,12 @@
 // BSD-style license that can be found in the LICENSE file.
 
 // Library tag to allow Dartium to run the tests.
-library sha256_test;
+#library('sha256_test');
 
-import "dart:crypto";
+#import("dart:crypto");
 
-part 'sha256_long_test_vectors.dart';
-part 'sha256_short_test_vectors.dart';
+#source('sha256_long_test_vectors.dart');
+#source('sha256_short_test_vectors.dart');
 
 List<int> createTestArr(int len) {
   var arr = new List<int>(len);