Update imports to use package:compiler and package:try.

dart/tests/compiler/dart2js/type_checker_test.dart

Index: dart/tests/compiler/dart2js/type_checker_test.dart
diff --git a/dart/tests/compiler/dart2js/type_checker_test.dart b/dart/tests/compiler/dart2js/type_checker_test.dart
index d23be71db1e5330ecdc4ff9c168968b17db360c1..55b31bacc625d478853ab294c4fd087510f8b485 100644
--- a/dart/tests/compiler/dart2js/type_checker_test.dart
+++ b/dart/tests/compiler/dart2js/type_checker_test.dart
@@ -5,19 +5,19 @@
 import 'dart:async';
 import 'package:async_helper/async_helper.dart';
 import 'package:expect/expect.dart';
-import '../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart';
-import '../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart';
-import '../../../sdk/lib/_internal/compiler/implementation/util/util.dart';
-import '../../../sdk/lib/_internal/compiler/implementation/source_file.dart';
+import 'package:compiler/implementation/elements/elements.dart';
+import 'package:compiler/implementation/tree/tree.dart';
+import 'package:compiler/implementation/util/util.dart';
+import 'package:compiler/implementation/source_file.dart';
 import 'mock_compiler.dart';
 import 'parser_helper.dart';
 
-import '../../../sdk/lib/_internal/compiler/implementation/elements/modelx.dart'
+import 'package:compiler/implementation/elements/modelx.dart'
   show ElementX, CompilationUnitElementX, FunctionElementX;
 
-import '../../../sdk/lib/_internal/compiler/implementation/dart2jslib.dart';
+import 'package:compiler/implementation/dart2jslib.dart';
 
-import '../../../sdk/lib/_internal/compiler/implementation/dart_types.dart';
+import 'package:compiler/implementation/dart_types.dart';
 
 final MessageKind NOT_ASSIGNABLE = MessageKind.NOT_ASSIGNABLE;
 final MessageKind MEMBER_NOT_FOUND = MessageKind.MEMBER_NOT_FOUND;