ess memory dump. */
  function extractProcessMemoryDumpAllocatorSizes(processMemoryDump, addSize) {
    const allocatorDumps = processMemoryDump.memoryAllocatorDumps;
    if (allocatorDumps === undefined) return;

    allocatorDumps.forEach(function(allocatorDump) {
      // Don't show tracing overhead in the charts.
      // TODO(petrcermak): Find a less hacky way to do this.
      if (allocatorDump.fullName === 'tracing') return;

      const allocatorSize = allocatorDump.numerics[DISPLAYED_SIZE_NUMERIC_N