rocess memory dumps to a list of chart series (one per
   * root allocator). Each series represents the evolution of the size of a the
   * corresponding root allocator (e.g. 'v8') over time.
   */
  function buildProcessAllocatedMemoryChartSeries(processMemoryDumps) {
    return buildMemoryChartSeries(processMemoryDumps,
        extractProcessMemoryDumpAllocatorSizes);
  }

  /**
   * Convert a list of global memory dumps to a list of chart series (one per
   * root allocator). Each series represents the e