A list of information about the memory allocator dump (e.g. about how
    // its fields were calculated). Each item should be an object with
    // a mandatory 'type' property and type-specific extra arguments (see
    // MemoryAllocatorDumpInfoType).
    this.infos = [];

    // For debugging purposes.
    this.guid = opt_guid;
  }

  /**
   * Size numeric names. Please refer to the Memory Dump Graph Metric
   * Calculation design document for more details (https://goo.gl/fKg0dt).
   */
  MemoryAllocatorDu