Add kythe support to plugins and format the spec files

pkg/analyzer_plugin/lib/protocol/protocol_constants.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".
 
 const String ANALYSIS_NOTIFICATION_ERRORS = 'analysis.errors';
 const String ANALYSIS_NOTIFICATION_ERRORS_ERRORS = 'errors';
@@ skipping 62 matching lines @@
 const String EDIT_REQUEST_GET_REFACTORING_VALIDATE_ONLY = 'validateOnly';
 const String EDIT_RESPONSE_GET_ASSISTS_ASSISTS = 'assists';
 const String EDIT_RESPONSE_GET_AVAILABLE_REFACTORINGS_KINDS = 'kinds';
 const String EDIT_RESPONSE_GET_FIXES_FIXES = 'fixes';
 const String EDIT_RESPONSE_GET_REFACTORING_CHANGE = 'change';
 const String EDIT_RESPONSE_GET_REFACTORING_FEEDBACK = 'feedback';
 const String EDIT_RESPONSE_GET_REFACTORING_FINAL_PROBLEMS = 'finalProblems';
 const String EDIT_RESPONSE_GET_REFACTORING_INITIAL_PROBLEMS = 'initialProblems';
 const String EDIT_RESPONSE_GET_REFACTORING_OPTIONS_PROBLEMS = 'optionsProblems';
 const String EDIT_RESPONSE_GET_REFACTORING_POTENTIAL_EDITS = 'potentialEdits';
+const String KYTHE_REQUEST_GET_KYTHE_ENTRIES = 'kythe.getKytheEntries';
+const String KYTHE_REQUEST_GET_KYTHE_ENTRIES_FILE = 'file';
+const String KYTHE_RESPONSE_GET_KYTHE_ENTRIES_ENTRIES = 'entries';
+const String KYTHE_RESPONSE_GET_KYTHE_ENTRIES_FILES = 'files';
 const String PLUGIN_NOTIFICATION_ERROR = 'plugin.error';
 const String PLUGIN_NOTIFICATION_ERROR_IS_FATAL = 'isFatal';
 const String PLUGIN_NOTIFICATION_ERROR_MESSAGE = 'message';
 const String PLUGIN_NOTIFICATION_ERROR_STACK_TRACE = 'stackTrace';
 const String PLUGIN_REQUEST_SHUTDOWN = 'plugin.shutdown';
 const String PLUGIN_REQUEST_VERSION_CHECK = 'plugin.versionCheck';
 const String PLUGIN_REQUEST_VERSION_CHECK_BYTE_STORE_PATH = 'byteStorePath';
 const String PLUGIN_REQUEST_VERSION_CHECK_SDK_PATH = 'sdkPath';
 const String PLUGIN_REQUEST_VERSION_CHECK_VERSION = 'version';
 const String PLUGIN_RESPONSE_VERSION_CHECK_CONTACT_INFO = 'contactInfo';
 const String PLUGIN_RESPONSE_VERSION_CHECK_INTERESTING_FILES =
     'interestingFiles';
 const String PLUGIN_RESPONSE_VERSION_CHECK_IS_COMPATIBLE = 'isCompatible';
 const String PLUGIN_RESPONSE_VERSION_CHECK_NAME = 'name';
 const String PLUGIN_RESPONSE_VERSION_CHECK_VERSION = 'version';