Merge analysis_testing package into analysis_server.

pkg/analysis_server/test/integration/analysis/occurrences_test.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.integration.analysis.occurrences;
 
-import 'package:analysis_testing/reflective_tests.dart';
+import '../../reflective_tests.dart';
 import 'package:unittest/unittest.dart';
 
 import '../integration_tests.dart';
 
 @ReflectiveTestCase()
 class Test extends AbstractAnalysisServerIntegrationTest {
   test_occurrences() {
     String pathname = sourcePath('test.dart');
     String text =
         r'''
@@ skipping 37 matching lines @@
       check('i', ['i = 0', 'i < 10', 'i++', 'i;']);
       check('j', ['j = 0', 'j < i', 'j++', 'j;']);
       check('sum', ['sum = 0', 'sum +=', 'sum)']);
     });
   }
 }
 
 main() {
   runReflectiveTests(Test);
 }