Change the deferred library check tool to allow unspecified packages to be in

lib/info.dart

 // Copyright (c) 2015, 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.
 
 /// Data produced by dart2js when run with the `--dump-info` flag.
 library dart2js_info.info;
 
 import 'dart:convert';
 
 import 'src/measurements.dart';
@@ skipping 34 matching lines @@
 /// Common information used for most kind of elements.
 // TODO(sigmund): add more:
 //  - inputSize: bytes used in the Dart source program
 abstract class BasicInfo implements Info {
   final InfoKind kind;
   final int id;
   String coverageId;
   int size;
   Info parent;
 
-  String get serializedId => '${_kindToString(kind)}/$id';
+  String get serializedId => '${kindToString(kind)}/$id';
 
   String name;
 
   /// If using deferred libraries, where the element associated with this info
   /// is generated.
   OutputUnitInfo outputUnit;
 
   BasicInfo(this.kind, this.id, this.name, this.outputUnit, this.size,
       this.coverageId);
 
@@ skipping 346 matching lines @@
 enum InfoKind {
   library,
   clazz,
   function,
   field,
   constant,
   outputUnit,
   typedef,
 }
 
-String _kindToString(InfoKind kind) {
+String kindToString(InfoKind kind) {
   switch (kind) {
     case InfoKind.library:
       return 'library';
     case InfoKind.clazz:
       return 'class';
     case InfoKind.function:
       return 'function';
     case InfoKind.field:
       return 'field';
     case InfoKind.constant:
       return 'constant';
     case InfoKind.outputUnit:
       return 'outputUnit';
     case InfoKind.typedef:
       return 'typedef';
     default:
       return null;
   }
 }
 
 int _idFromSerializedId(String serializedId) =>
     int.parse(serializedId.substring(serializedId.indexOf('/') + 1));
 
 InfoKind _kindFromSerializedId(String serializedId) =>
-    _kindFromString(serializedId.substring(0, serializedId.indexOf('/')));
+    kindFromString(serializedId.substring(0, serializedId.indexOf('/')));
 
-InfoKind _kindFromString(String kind) {
+InfoKind kindFromString(String kind) {
   switch (kind) {
     case 'library':
       return InfoKind.library;
     case 'class':
       return InfoKind.clazz;
     case 'function':
       return InfoKind.function;
     case 'field':
       return InfoKind.field;
     case 'constant':
@@ skipping 54 matching lines @@
 
   visitConstant(ConstantInfo info) {}
 
   visitFunction(FunctionInfo info) {
     info.closures.forEach(visitFunction);
   }
 
   visitTypedef(TypedefInfo info) {}
   visitOutput(OutputUnitInfo info) {}
 }