Include more information when deserializing ProgramInfo

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 105 matching lines @@
 
   /// A new representation of dependencies from one info to another. An entry in
   /// this map indicates that an [Info] depends on another (e.g. a function
   /// invokes another). Please note that the data in this field might not be
   /// accurate yet (this is work in progress).
   Map<Info, List<Info>> dependencies = {};
 
   /// Major version indicating breaking changes in the format. A new version
   /// means that an old deserialization algorithm will not work with the new
   /// format.
-  final int version = 3;
+  final int version = 4;
 
   /// Minor version indicating non-breaking changes in the format. A change in
   /// this version number means that the json parsing in this library from a
   /// previous will continue to work after the change. This is typically
   /// increased when adding new entries to the file format.
   // Note: the dump-info.viewer app was written using a json parser version 3.2.
-  final int minorVersion = 6;
+  final int minorVersion = 0;
 
   AllInfo();
 
   dynamic accept(InfoVisitor visitor) => visitor.visitAll(this);
 }
 
 class ProgramInfo {
   FunctionInfo entrypoint;
   int size;
   String dart2jsVersion;
   DateTime compilationMoment;
   Duration compilationDuration;
-  // TODO(sigmund): use Duration.
-  int toJsonDuration;
-  int dumpInfoDuration;
+  Duration toJsonDuration;
+  Duration dumpInfoDuration;
   bool noSuchMethodEnabled;
   bool minified;
 
   ProgramInfo(
       {this.entrypoint,
       this.size,
       this.dart2jsVersion,
       this.compilationMoment,
       this.compilationDuration,
       this.toJsonDuration,
@@ skipping 355 matching lines @@
 
   visitConstant(ConstantInfo info) {}
 
   visitFunction(FunctionInfo info) {
     info.closures.forEach(visitFunction);
   }
 
   visitTypedef(TypedefInfo info) {}
   visitOutput(OutputUnitInfo info) {}
 }