Merge libv1.

tests/compiler/dart2js/dart_backend_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 'dart:uri';
 import 'parser_helper.dart';
 import 'mock_compiler.dart';
 import '../../../sdk/lib/_internal/compiler/compiler.dart';
 import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart' as leg;
 import '../../../sdk/lib/_internal/compiler/implementation/dart_backend/dart_backend.dart';
@@ skipping 86 matching lines @@
       Expect.fail('$uri: $begin-$end: $message [$kind]');
     }
   }
 
   final options = <String>['--output-type=dart'];
   if (minify) options.add('--minify');
   if (stripTypes) options.add('--force-strip=types');
 
   compile(
       scriptUri,
-      fileUri('libraryRoot'),
-      fileUri('packageRoot'),
+      fileUri('libraryRoot/'),
+      fileUri('packageRoot/'),
       provider,
       handler,
       options).then(continuation);
 }
 
 testSimpleFileUnparse() {
   final src = '''
 should_be_dropped() {
 }
 
@@ skipping 597 matching lines @@
   testDoubleMains();
   testStaticAccessIoLib();
   testLocalFunctionPlaceholder();
   testMinification();
   testClosureLocalsMinified();
   testParametersMinified();
   testDeclarationTypePlaceholders();
   testPlatformLibraryMemberNamesAreFixed();
   testConflictsWithCoreLib();
 }