Remove dart2jslib.dart

tests/compiler/dart2js/backend_dart/end2end_test.dart

 // Copyright (c) 2014, 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.
 
 /// End-to-end test of the dart2dart compiler.
 library dart_backend.end2end_test;
 
 import 'package:async_helper/async_helper.dart';
-import 'package:compiler/src/dart2jslib.dart';
+import 'package:compiler/src/compiler.dart';
 import 'package:compiler/src/dart_backend/dart_backend.dart';
 import 'package:expect/expect.dart';
 
 import '../../../../pkg/analyzer2dart/test/test_helper.dart' hide TestSpec;
 import '../../../../pkg/analyzer2dart/test/end2end_data.dart';
 
 import 'test_helper.dart';
 import '../output_collector.dart';
 
 main(List<String> args) {
   performTests(TEST_DATA, asyncTester, runTest, args);
 }
 
 runTest(TestSpec result) {
   OutputCollector outputCollector = new OutputCollector();
   asyncTest(() => compilerFor(result.input, outputProvider: outputCollector)
       .then((Compiler compiler) {
     String expectedOutput = result.output.trim();
     compiler.phase = Compiler.PHASE_COMPILING;
     DartBackend backend = compiler.backend;
     backend.assembleProgram();
     String output = outputCollector.getOutput('', 'dart').trim();
     Expect.equals(expectedOutput, output,
         '\nInput:\n${result.input}\n'
         'Expected:\n$expectedOutput\n'
         'Actual:\n$output\n');
   }));
 }