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

dart/tests/compiler/dart2js/dump_info_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.
 // Test that parameters keep their names in the output.
 
 import "package:expect/expect.dart";
 import "package:async_helper/async_helper.dart";
 import 'memory_compiler.dart';
-import '../../../sdk/lib/_internal/compiler/implementation/dump_info.dart';
+import 'package:compiler/implementation/dump_info.dart';
 
 const String TEST_ONE = r"""
 library main;
 
 int a = 2;
 
 class c {
   final int m;
   c(this.m) {
     () {} ();  // TODO (sigurdm): Empty closure, hack to avoid inlining.
@@ skipping 41 matching lines @@
     var constructor = c.contents.singleWhere((e) => e.name == "c");
     Expect.stringEquals("constructor", constructor.kind);
     var method = c.contents.singleWhere((e) => e.name == "foo");
     Expect.stringEquals("method", method.kind);
     var field = c.contents.singleWhere((e) => e.name == "m");
     Expect.stringEquals("field", field.kind);
     Expect.stringEquals("function", f.kind);
     Expect.stringEquals("function", main.kind);
   }));
 }