Moved the tests for the element model into locations corresponding to the implementation

pkg/analyzer/test/dart/test_all.dart

 // Copyright (c) 2014, 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 test.src;
+library analyzer.test.generated.test_all;
 
 import 'package:unittest/unittest.dart';
 
 import '../utils.dart';
-import 'utilities/test_all.dart' as utilities_all;
+import 'element/test_all.dart' as element;
 
-/**
- * Utility for manually running all tests.
- */
+/// Utility for manually running all tests.
 main() {
   initializeTestEnvironment();
-  group('analysis_server', () {
-    utilities_all.main();
+  group('generated tests', () {
+    element.main();
   });
 }