Move a bunch of src/ files into subdirectories.

lib/src/test.dart

Index: lib/src/test.dart
diff --git a/lib/src/test.dart b/lib/src/test.dart
deleted file mode 100644
index d6b9475efb65b35e6a9fdf4fadbca41fd5710ea6..0000000000000000000000000000000000000000
--- a/lib/src/test.dart
+++ /dev/null
@@ -1,24 +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.
-
-library unittest.test;
-
-import 'live_test.dart';
-import 'suite.dart';
-
-/// A single test.
-///
-/// A test is immutable and stateless, which means that it can't be run
-/// directly. To run one, load a live version using [Test.load] and run it using
-/// [LiveTest.run].
-abstract class Test {
-  /// The name of the test.
-  String get name;
-
-  /// Loads a live version of this test, which can be used to run it a single
-  /// time.
-  ///
-  /// [suite] is the suite within which this test is being run.
-  LiveTest load(Suite suite);
-}