Filed by sheriff-o-matic@appspot.gserviceaccount.com on behalf of engedy@chromium.org

Some individual test cases in `telemetry_unittests` take more than 2 minutes to run (before timing out), causing the entire shard to time out, e.g.:

[95/294] telemetry.internal.browser.tab_unittest.TabTest.testNavigateAndWaitForCompleteState failed unexpectedly 123.5670s:
  Chrome build location for win_AMD64 not found. Browser will be run without Flash.
  Running sub processes (10 processes): chrome.exe (2164) - ['../../out\\Debug_x64\\chrome.exe', '--enable-net-benchmarking', '--metrics-recording-only', '--no-default-browser-check', '--no-first-run', '--enable-gpu-benchmarking', '--deny-permission-prompts', '--autoplay-policy=no-user-gesture-required', '--disable-background-networking', '--disable-component-extensions-with-background-pages', '--disable-default-apps', '--disable-search-geolocation-disclosure', '--proxy-server=socks://localhost:51023', '--ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I=', '--remote-debugging-port=0', '--enable-crash-reporter-for-testing', '--disable-component-update', '--window-size=1280,1024', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', 'about:blank']
  chrome.exe (6312) - ['../../out\\Debug_x64\\chrome.exe', '--enable-net-benchmarking', '--metrics-recording-only', '--no-default-browser-check', '--no-first-run', '--enable-gpu-benchmarking', '--deny-permission-prompts', '--autoplay-policy=no-user-gesture-required', '--disable-background-networking', '--disable-component-extensions-with-background-pages', '--disable-default-apps', '--disable-search-geolocation-disclosure', '--proxy-server=socks://localhost:50447', '--ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I=', '--remote-debugging-port=0', '--enable-crash-reporter-for-testing', '--disable-component-update', '--window-size=1280,1024', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', 'about:blank']
  python.exe (3644) - ['C:\\b\\s\\w\\ir\\.swarming_module_cache\\vpython\\383165\\Scripts\\python.exe', 'C:\\b\\s\\w\\ir\\third_party\\catapult\\telemetry\\third_party\\tsproxy\\tsproxy.py', '--port=0', '--desthost=127.0.0.1']
  chrome.exe (5912) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=crashpad-handler', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '/prefetch:7', '--monitor-self', '--monitor-self-argument=--type=crashpad-handler', '--monitor-self-argument=--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '--monitor-self-argument=/prefetch:7', '--monitor-self-annotation=ptype=crashpad-handler', '--database=c:\\b\\s\\w\\ito_26gx\\tmpe9zhga', '--metrics-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '--annotation=plat=Win64', '--annotation=prod=Chromium', '--annotation=ver=70.0.3512.0-devel', '--initial-client-data=0x21c,0x220,0x224,0x218,0x228,0x7ffc5587b948,0x7ffc5587b954,0x7ffc5587b918']
  chrome.exe (6492) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=gpu-process', '--field-trial-handle=1716,8187182763927733711,5375165161402129955,131072', '--noerrdialogs', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '--start-stack-profiler', '--gpu-preferences=KAAAAAAAAACAAwBgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAKAAAAEAAAAAAAAAAAAAAACwAAABAAAAAAAAAAAQAAAAoAAAAQAAAAAAAAAAEAAAALAAAA', '--noerrdialogs', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '--start-stack-profiler', '--service-request-channel-token=8784810521673194843', '--mojo-platform-channel-handle=1740', '--ignored= --type=renderer ', '/prefetch:2']
  chrome.exe (5864) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=gpu-process', '--field-trial-handle=1704,17196352589802212563,9219418618727199773,131072', '--noerrdialogs', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '--start-stack-profiler', '--gpu-preferences=KAAAAAAAAACAAwBgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAKAAAAEAAAAAAAAAAAAAAACwAAABAAAAAAAAAAAQAAAAoAAAAQAAAAAAAAAAEAAAALAAAA', '--noerrdialogs', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '--start-stack-profiler', '--service-request-channel-token=17994297544122954107', '--mojo-platform-channel-handle=1732', '--ignored= --type=renderer ', '/prefetch:2']
  chrome.exe (6504) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=utility', '--field-trial-handle=1704,17196352589802212563,9219418618727199773,131072', '--lang=en-US', '--service-sandbox-type=audio', '--ignore-certificate-errors-spki-list=PhrPvGIaAMmd29hj8BCZOq096yj7uMpRNHpn5PDxI6I=', '--proxy-server=socks://localhost:50447', '--noerrdialogs', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '--service-request-channel-token=15654418124543499361', '--mojo-platform-channel-handle=3824', '/prefetch:8']
  chrome.exe (6728) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=crashpad-handler', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '/prefetch:7', '--monitor-self', '--monitor-self-argument=--type=crashpad-handler', '--monitor-self-argument=--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '--monitor-self-argument=/prefetch:7', '--monitor-self-annotation=ptype=crashpad-handler', '--database=c:\\b\\s\\w\\ito_26gx\\tmppt2nhp', '--metrics-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '--annotation=plat=Win64', '--annotation=prod=Chromium', '--annotation=ver=70.0.3512.0-devel', '--initial-client-data=0x21c,0x220,0x224,0x218,0x228,0x7ffc5587b948,0x7ffc5587b954,0x7ffc5587b918']
  chrome.exe (2676) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=crashpad-handler', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmprqzvxo', '/prefetch:7', '--no-periodic-tasks', '--monitor-self-annotation=ptype=crashpad-handler', '--database=c:\\b\\s\\w\\ito_26gx\\tmpe9zhga', '--annotation=plat=Win64', '--annotation=prod=Chromium', '--annotation=ver=70.0.3512.0-devel', '--initial-client-data=0x238,0x23c,0x240,0x234,0x230,0x7ff6011844d8,0x7ff6011844e4,0x7ff6011844a8']
  chrome.exe (3500) - ['C:\\b\\s\\w\\ir\\out\\Debug_x64\\chrome.exe', '--type=crashpad-handler', '--user-data-dir=c:\\b\\s\\w\\ito_26gx\\tmpftwji6', '/prefetch:7', '--no-periodic-tasks', '--monitor-self-annotation=ptype=crashpad-handler', '--database=c:\\b\\s\\w\\ito_26gx\\tmppt2nhp', '--annotation=plat=Win64', '--annotation=prod=Chromium', '--annotation=ver=70.0.3512.0-devel', '--initial-client-data=0x238,0x23c,0x240,0x234,0x244,0x7ff6011844d8,0x7ff6011844e4,0x7ff6011844a8']
  Chrome build location for win_AMD64 not found. Browser will be run without Flash.
  Traceback (most recent call last):
    File "C:\b\s\w\ir\third_party\catapult\telemetry\telemetry\testing\tab_test_case.py", line 25, in setUp
      self._RestartBrowser()
    File "C:\b\s\w\ir\third_party\catapult\telemetry\telemetry\testing\tab_test_case.py", line 45, in _RestartBrowser
      self._tab = self._browser.tabs[0]
    File "C:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\browser\tab_list.py", line 18, in __getitem__
      return self._tab_list_backend.__getitem__(index)
    File "C:\b\s\w\ir\third_party\catapult\telemetry\telemetry\internal\backends\chrome_inspector\inspector_backend_list.py", line 62, in __getitem__
      index, repr(self._filtered_context_ids)))
  DevtoolsTargetCrashException: Web content with index 0 may have crashed. filtered_context_ids = []
  Found Minidump: False
  Stack Trace:
  ********************************************************************************
  	No crash dump found.
  ********************************************************************************
  Standard output:
  ********************************************************************************
  ********************************************************************************
  System log:
  (Not implemented)
[95/294] telemetry.internal.browser.tab_unittest.TabTest.testTabIsAlive queued


See:
https://chromium-swarm.appspot.com/task?id=3f180b928b6bab10&refresh=10&show_raw=1