Split up server_domain_int_test.dart; regularize integration test directories.

pkg/analysis_server/test/integration/completion_domain_int_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.completion.domain;
-
-import 'dart:async';
-
-import 'package:analysis_testing/reflective_tests.dart';
-import 'package:unittest/unittest.dart';
-
-import 'integration_tests.dart';
-
-@ReflectiveTestCase()
-class CompletionDomainIntegrationTest extends
-    AbstractAnalysisServerIntegrationTest {
-  fail_test_getSuggestions_string_var() {
-    // See dartbug.com/20188
-    String pathname = sourcePath('test.dart');
-    String text = r'''
-var test = '';
-main() {
-  test.
-}
-''';
-    writeFile(pathname, text);
-    standardAnalysisSetup();
-
-    return analysisFinished.then((_) {
-      return sendCompletionGetSuggestions(pathname, text.indexOf('test.') +
-          'test.'.length).then((result) {
-        // Since the feature doesn't work yet, just pause for a second to
-        // collect the output of the analysis server, and then stop the test.
-        // TODO(paulberry): finish writing the integration test once the feature
-        // it more complete.
-        return new Future.delayed(new Duration(seconds: 1), () {
-          fail('test not completed yet');
-        });
-      });
-    });
-  }
-
-  test_placeholder() {
-    // The unit test framework freaks out if there are no tests, so this is a
-    // placeholder until we have a passing test.
-    // TODO(paulberry): remove this.
-  }
-}
-
-main() {
-  runReflectiveTests(CompletionDomainIntegrationTest);
-}