Add kythe support to plugins and format the spec files

pkg/analyzer_plugin/test/integration/support/integration_test_methods.dart

 // Copyright (c) 2017, 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.
 //
 // This file has been automatically generated.  Please do not edit it manually.
 // To regenerate the file, use the script
 // "pkg/analysis_server/tool/spec/generate_files".
 
 /**
  * Convenience methods for running integration tests
@@ skipping 690 matching lines @@
     var params = new EditGetRefactoringParams(
             kind, file, offset, length, validateOnly,
             options: options)
         .toJson();
     var result = await server.send("edit.getRefactoring", params);
     ResponseDecoder decoder = new ResponseDecoder(kind);
     return new EditGetRefactoringResult.fromJson(decoder, 'result', result);
   }
 
   /**
+   * Return the list of KytheEntry objects for some file, given the current
+   * state of the file system populated by "analysis.updateContent".
+   *
+   * Parameters
+   *
+   * file: FilePath
+   *
+   *   The file containing the code for which the Kythe Entry objects are being
+   *   requested.
+   *
+   * Returns
+   *
+   * entries: List<KytheEntry>
+   *
+   *   The list of KytheEntry objects for the queried file.
+   *
+   * files: List<FilePath>
+   *
+   *   The set of files paths that were required, but not in the file system,
+   *   to give a complete and accurate Kythe graph for the file. This could be
+   *   due to a referenced file that does not exist or generated files not
+   *   being generated or passed before the call to "getKytheEntries".
+   */
+  Future<KytheGetKytheEntriesResult> sendKytheGetKytheEntries(
+      String file) async {
+    var params = new KytheGetKytheEntriesParams(file).toJson();
+    var result = await server.send("kythe.getKytheEntries", params);
+    ResponseDecoder decoder = new ResponseDecoder(null);
+    return new KytheGetKytheEntriesResult.fromJson(decoder, 'result', result);
+  }
+
+  /**
    * Initialize the fields in InttestMixin, and ensure that notifications will
    * be handled.
    */
   void initializeInttestMixin() {
     _onPluginError = new StreamController<PluginErrorParams>(sync: true);
     onPluginError = _onPluginError.stream.asBroadcastStream();
     _onAnalysisErrors = new StreamController<AnalysisErrorsParams>(sync: true);
     onAnalysisErrors = _onAnalysisErrors.stream.asBroadcastStream();
     _onAnalysisFolding =
         new StreamController<AnalysisFoldingParams>(sync: true);
@@ skipping 53 matching lines @@
         outOfTestExpect(params, isAnalysisOutlineParams);
         _onAnalysisOutline
             .add(new AnalysisOutlineParams.fromJson(decoder, 'params', params));
         break;
       default:
         fail('Unexpected notification: $event');
         break;
     }
   }
 }