./tools/perf/run_benchmark --browser=system page_cycler.typical_25

No benchmark named "page_cycler.typical_25".

Do you mean any of those benchmarks below?
Available benchmarks are:
  page_cycler.basic_oopif                 A benchmark measuring performance of the out-of-process iframes page
  page_cycler.intl_ar_fa_he              Page load time for a variety of pages in Arabic, Farsi and Hebrew.
  page_cycler.intl_es_fr_pt-BR           Page load time for a pages in Spanish, French and Brazilian Portuguese.
  page_cycler.intl_hi_ru                 Page load time benchmark for a variety of pages in Hindi and Russian.
  page_cycler.intl_ja_zh                 Page load time benchmark for a variety of pages in Japanese and Chinese.
  page_cycler.intl_ko_th_vi              Page load time for a variety of pages in Korean, Thai and Vietnamese.
  page_cycler.top_10_mobile              Page load time benchmark for the top 10 mobile web pages.
  page_cycler.tough_layout_cases         Page loading for the slowest layouts observed in the Alexa top 1 million.
  page_cycler_site_isolation.basic_oopif  A benchmark measuring performance of out-of-process iframes. 
  page_cycler_v2.typical_25              Page load time benchmark for a 25 typical web pages.
  power.top_10                           Top 10 quiescent power test.
  power.top_25                           Top 25 quiescent power test.
  power.typical_10_mobile                Android typical 10 mobile power test.
  power.typical_10_mobile_reload         Android typical 10 mobile power reload test.
  tab_switching.typical_25               This test records the MPArch.RWH_TabSwitchPaintDuration histogram.
Pass --browser to list benchmarks for another browser.

This happens while page_cycler.typical_25 still exist & is not disabled on any platform