Change "typedef" to "class" in core library and related tests.

tests/compiler/dart2js/unparser_test.dart

 // Copyright (c) 2012, 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 "package:expect/expect.dart";
 import 'parser_helper.dart';
 import 'mock_compiler.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart';
 
 testUnparse(String statement) {
@@ skipping 265 matching lines @@
       "external const factory Foo() = prefix.Bar<List<T>,T>.baz;");
 }
 
 testClassDeclarations() {
   testUnparseTopLevelWithMetadata('class Foo{}');
   testUnparseTopLevelWithMetadata('abstract class Foo{}');
   testUnparseTopLevelWithMetadata('class Fisk{operator-(x){}}');
 }
 
 testMixinApplications() {
-  testUnparseTopLevelWithMetadata('typedef C = S with M;');
-  testUnparseTopLevelWithMetadata('typedef C = S with M1,M2;');
-  testUnparseTopLevelWithMetadata('typedef C = S with M1,M2,M3;');
+  testUnparseTopLevelWithMetadata('class C = S with M;');
+  testUnparseTopLevelWithMetadata('class C = S with M1,M2;');
+  testUnparseTopLevelWithMetadata('class C = S with M1,M2,M3;');
 
-  testUnparseTopLevelWithMetadata('typedef C<A> = S with M;');
-  testUnparseTopLevelWithMetadata('typedef C<A,B> = S with M;');
+  testUnparseTopLevelWithMetadata('class C<A> = S with M;');
+  testUnparseTopLevelWithMetadata('class C<A,B> = S with M;');
 
-  testUnparseTopLevelWithMetadata('typedef C = S<A> with M;');
-  testUnparseTopLevelWithMetadata('typedef C = S<A,B> with M;');
+  testUnparseTopLevelWithMetadata('class C = S<A> with M;');
+  testUnparseTopLevelWithMetadata('class C = S<A,B> with M;');
 
-  testUnparseTopLevelWithMetadata('typedef C = S with M<A>;');
-  testUnparseTopLevelWithMetadata('typedef C = S with M<A,B>;');
-  testUnparseTopLevelWithMetadata('typedef C = S with M1<A>,M2;');
-  testUnparseTopLevelWithMetadata('typedef C = S with M1,M2<A,B>;');
+  testUnparseTopLevelWithMetadata('class C = S with M<A>;');
+  testUnparseTopLevelWithMetadata('class C = S with M<A,B>;');
+  testUnparseTopLevelWithMetadata('class C = S with M1<A>,M2;');
+  testUnparseTopLevelWithMetadata('class C = S with M1,M2<A,B>;');
+
+  testUnparseTopLevelWithMetadata('abstract class C = S with M;');
+  testUnparseTopLevelWithMetadata('abstract class C<A> = S<A> with M<A>;');
 }
 
 testUnparseParameters(List<String> variableDeclarations) {
   var sb = new StringBuffer();
   sb.write('Constructor(');
   int index = 0;
   for (String variableDeclaration in variableDeclarations) {
     if (index != 0) {
       sb.write(', ');
     }
@@ skipping 64 matching lines @@
   testExport();
   testPart();
   testPartOf();
   testCombinators();
   testRedirectingFactoryConstructors();
   testClassDeclarations();
   testMixinApplications();
   testParameters();
   testSymbolLiterals();
 }