anchor.diff:      "bower-override-dependencies": {
       },
       "bower-use-git-clone": false,
  -    "package-files-are-editable": false
  +    "package-files-are-editable": false,
  +    "enable-new-usb-api": true
     };
   
     /**
  
positive.code: 
    static bool get polymerDesigner =>
        _flags['enable-polymer-designer'] == true;
  
    /**
     * Add new flags to the set, possibly overwriting the existing values.
  
negative.code: 
  import 'dart:async';
  import 'dart:convert' show JSON;
  
  import 'platform_info.dart';
  
  /**
   * Stores global developer flags.
  