Split PrivateMemberTest multi-test into separate tests.

tests/language/src/PrivateMember2NegativeTest.dart

Index: tests/language/src/PrivateMember2NegativeTest.dart
diff --git a/tests/language/src/PrivateMember2NegativeTest.dart b/tests/language/src/PrivateMember2NegativeTest.dart
new file mode 100644
index 0000000000000000000000000000000000000000..74e41fcce7d22f2c8d759847fb99250cb4e99a49
--- /dev/null
+++ b/tests/language/src/PrivateMember2NegativeTest.dart
@@ -0,0 +1,19 @@
+// Copyright (c) 2011, 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.
+
+#library('PrivateMemberLibA');
+
+#import('PrivateMember2LibB.dart');
+
+class A {}
+
+class Test extends B {
+  test() {
+    _staticField = true;
+  }
+}
+
+void main() {
+  new Test().test();
+}