[idbcursor-iterating-update.htm]
  expected:
    if (os == "win") and not debug and (processor == "x86"): [OK, TIMEOUT]
    if (os == "win") and not debug and (processor == "x86_64"): [OK, TIMEOUT]
    if (os == "android") and fission: [OK, TIMEOUT]
  [Calling cursor => cursor.delete() doesn't affect index iteration]
    expected:
      if (os == "win") and not debug and (processor == "x86_64"): [PASS, TIMEOUT]
      if (os == "win") and not debug and (processor == "x86"): [PASS, TIMEOUT]