Reject deprecated language features.

dart/tests/compiler/dart2js/type_checker_test.dart

 // Copyright (c) 2011, 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.
 
 import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart'
        hide SourceString;
 import '../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/util/util.dart';
 import 'mock_compiler.dart';
@@ skipping 106 matching lines @@
     analyze("{ int i = 1; bool j = i${op}; }", MessageKind.NOT_ASSIGNABLE);
     analyze("{ bool b = true; bool j = b${op}; }");
     analyze("{ bool b = true; int j = ${op}b; }");
   }
   for (final op in ['||', '&&']) {
     analyze("{ bool b = (true ${op} false); }");
     analyze("{ int b = true ${op} false; }", MessageKind.NOT_ASSIGNABLE);
     analyze("{ bool b = (1 ${op} false); }", MessageKind.NOT_ASSIGNABLE);
     analyze("{ bool b = (true ${op} 2); }", MessageKind.NOT_ASSIGNABLE);
   }
-  for (final op in ['>', '<', '<=', '>=', '==', '!=', '===', '!==']) {
+  for (final op in ['>', '<', '<=', '>=', '==', '!=']) {
     analyze("{ bool b = 1 ${op} 2; }");
     analyze("{ int i = 1 ${op} 2; }", MessageKind.NOT_ASSIGNABLE);
     analyze("{ int i; bool b = (i = true) ${op} 2; }",
             MessageKind.NOT_ASSIGNABLE);
     analyze("{ int i; bool b = 1 ${op} (i = true); }",
             MessageKind.NOT_ASSIGNABLE);
   }
 }
 
 void testConstructorInvocationArgumentCount() {
@@ skipping 328 matching lines @@
   Node node = listener.popNode();
   classElement.ensureResolved(compiler);
   TreeElements elements = compiler.resolveNodeStatement(node, classElement);
   TypeCheckerVisitor checker = new TypeCheckerVisitor(compiler, elements,
                                                                 types);
   compiler.clearWarnings();
   checker.currentClass = classElement;
   checker.analyze(node);
   compareWarningKinds(text, expectedWarnings, compiler.warnings);
 }