anchor.diff:  // BSD-style license that can be found in the LICENSE file.
   
   #library('libraries');
  +
  +/**
  + * A bit flag used by [LibraryInfo] indicating that a library is used by dart2js
  + */
  +final int DART2JS_PLATFORM = 1;
  +
  +/**
  + * A bit flag used by [LibraryInfo] indicating that a library is used by the VM
  + */
  +final int VM_PLATFORM = 2;
   
   /**
    * Mapping of "dart:" library name (e.g. "core") to information about that library.
  
positive.code:   // Used by VM applications
    "builtin": const LibraryInfo(
        "builtin/builtin_runtime.dart",
        category: "Server"),
  
    "compiler": const LibraryInfo(
        "compiler/compiler.dart",
        category: "Tools"),
  
    "core": const LibraryInfo(
        "core/core_runtime.dart",
  
negative.code:   "nativewrappers": const LibraryInfo(
        "html/nativewrappers.dart",
        category: "Client",
        implementation: true,
        documented: false,
        platforms: VM_PLATFORM),
  
    "uri": const LibraryInfo(
        "uri/uri.dart"),
  