Update fasta tests to use the new transformation API

pkg/front_end/lib/src/fasta/testing/kernel_chain.dart

 // Copyright (c) 2016, 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.md file.
 
 // TODO(ahe): Copied from closure_conversion branch of kernel, remove this file
 // when closure_conversion is merged with master.
 
 library kernel.testing.kernel_chain;
 
 import 'dart:async' show
@@ skipping 165 matching lines @@
       TestDescription description, TestContext testContext) async {
     try {
       DartLoader loader = await testContext.createLoader();
       Target target = getTarget(
           "vm", new TargetFlags(strongMode: testContext.options.strongMode));
       Program program =
           loader.loadProgram(description.uri, target: target);
       for (var error in loader.errors) {
         return fail(program, "$error");
       }
-      target.transformProgram(program);
+      target.performModularTransformations(program);
+      target.performGlobalTransformations(program);
       return pass(program);
     } catch (e, s) {
       return crash(e, s);
     }
   }
 }
 
 
 class Print extends Step<Program, Program, dynamic> {
   const Print();
@@ skipping 188 matching lines @@
 
 Future openWrite(Uri uri, f(IOSink sink)) async {
   IOSink sink = new File.fromUri(uri).openWrite();
   try {
     await f(sink);
   } finally {
     await sink.close();
   }
   print("Wrote $uri");
 }