Clarify type names in analysis server API.

pkg/analysis_server/test/analysis/notification_errors_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.analysis.notification_errors;
 
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/domain_analysis.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_testing/reflective_tests.dart';
@@ skipping 28 matching lines @@
   test_ParserError() {
     createProject();
     addTestFile('library lib');
     return waitForTasksFinished().then((_) {
       List<AnalysisError> errors = filesErrors[testFile];
       expect(errors, hasLength(1));
       AnalysisError error = errors[0];
       expect(error.location.file, '/project/bin/test.dart');
       expect(error.location.offset, isPositive);
       expect(error.location.length, isNonNegative);
-      expect(error.severity, ErrorSeverity.ERROR);
-      expect(error.type, ErrorType.SYNTACTIC_ERROR);
+      expect(error.severity, AnalysisErrorSeverity.ERROR);
+      expect(error.type, AnalysisErrorType.SYNTACTIC_ERROR);
       expect(error.message, isNotNull);
     });
   }
 
   test_StaticWarning() {
     createProject();
     addTestFile('''
 main() {
   print(UNKNOWN);
 }
 ''');
     return waitForTasksFinished().then((_) {
       List<AnalysisError> errors = filesErrors[testFile];
       expect(errors, hasLength(1));
       AnalysisError error = errors[0];
-      expect(error.severity, ErrorSeverity.WARNING);
-      expect(error.type, ErrorType.STATIC_WARNING);
+      expect(error.severity, AnalysisErrorSeverity.WARNING);
+      expect(error.type, AnalysisErrorType.STATIC_WARNING);
     });
   }
 
   test_notInAnalysisRoot() {
     createProject();
     String otherFile = '/other.dart';
     addFile(otherFile, 'UnknownType V;');
     addTestFile('''
 import '/other.dart';
 
 main() {
   print(V);
 }
 ''');
     return waitForTasksFinished().then((_) {
       expect(filesErrors[otherFile], isNull);
     });
   }
 }