Align strong-mode error codes with analyzer conv.

pkg/analyzer/test/src/task/dart_test.dart

 // Copyright (c) 2015, 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.src.task.dart_test;
 
 import 'package:analyzer/src/context/cache.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/constant.dart';
 import 'package:analyzer/src/generated/element.dart';
@@ skipping 4376 matching lines @@
 class C {
   String field = topLevel;
 }
 ''');
     computeResult(new LibrarySpecificUnit(source, source), STRONG_MODE_ERRORS);
     // validate
     _fillErrorListener(STRONG_MODE_ERRORS);
 
     var errors = errorListener.errors;
     expect(errors.length, 1);
-    expect(errors[0].errorCode.name, "dev_compiler.StaticTypeError");
+    expect(errors[0].errorCode.name, "STRONG_MODE_STATIC_TYPE_ERROR");
   }
 }
 
 @reflectiveTest
 class VerifyUnitTaskTest extends _AbstractDartTaskTest {
   test_perform_constantError() {
     Source source = newSource(
         '/test.dart',
         '''
 main(int p) {
@@ skipping 184 matching lines @@
   /**
    * Fill [errorListener] with [result] errors in the current [task].
    */
   void _fillErrorListener(ResultDescriptor<List<AnalysisError>> result) {
     List<AnalysisError> errors = task.outputs[result];
     expect(errors, isNotNull, reason: result.name);
     errorListener = new GatheringErrorListener();
     errorListener.addAll(errors);
   }
 }