Implement canonical name scheme in kernel.

pkg/kernel/test/round_trip.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 file.
 library kernel.round_trip;
 
 import 'dart:async';
 import 'dart:io';
 import 'package:kernel/binary/ast_from_binary.dart';
 import 'package:kernel/binary/ast_to_binary.dart';
-import 'package:kernel/binary/loader.dart';
 import 'package:kernel/kernel.dart';
 
 const String usage = '''
 Usage: round_trip.dart FILE.dill
 
 Deserialize and serialize the given program and check that the resulting byte
 sequence is identical to the original.
 ''';
 
 void main(List<String> args) {
   if (args.length != 1) {
     print(usage);
     exit(1);
   }
   testRoundTrip(new File(args[0]).readAsBytesSync());
 }
 
 void testRoundTrip(List<int> bytes) {
-  var loader = new BinaryLoader(new Repository());
-  var program = new BinaryBuilder(loader, bytes).readProgramFile();
+  var program = new Program();
+  new BinaryBuilder(bytes).readSingleFileProgram(program);
   new BinaryPrinterWithExpectedOutput(bytes).writeProgramFile(program);
 }
 
 class DummyStreamConsumer extends StreamConsumer<List<int>> {
   @override
   Future addStream(Stream<List<int>> stream) async => null;
 
   @override
   Future close() async => null;
 }
@@ skipping 26 matching lines @@
           'Expected ${show(expected)} but found ${show(byte)}';
     }
     ++offset;
   }
 
   @override
   void writeBytes(List<int> bytes) {
     bytes.forEach(writeByte);
   }
 }