The following tests are flaky:

- DataUrlNavigationBrowserTest.UnknownMimeType_WindowOpen_Download had UNKNOWN failures on builds 2932,2930,2921,2919,2913,2902,2896 of asan-clang-phone

- DataUrlNavigationBrowserTest.OctetStream_WindowOpen_Download had UNKNOWN failures on builds 2921 and 2909 of asan-clang-phone

https://uberchromegw.corp.google.com/i/internal.client.clank/builders/asan-clang-phone?numbuilds=200

The failures above all turned the bot red.

Many of the tests in this test suite also occasionally flake on other bots (including upstream bots) and other OSes (including linux and mac), though such failures are usually "FAIL PASS" or "TIMEOUT PASS" and so rarely turn bots red (however they still point to race conditions):

https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=content_browsertests&tests=DataUrlNavigationBrowserTest

The log output for these failures doesn't seem very helpful unfortunately:

C 6831.231s Main  [UNKNOWN] DataUrlNavigationBrowserTest.UnknownMimeType_WindowOpen_Download:
C 6831.231s Main  [ RUN      ] DataUrlNavigationBrowserTest.UnknownMimeType_WindowOpen_Download
C 6831.231s Main  [WARNING:dns_config_service_posix.cc(326)] Failed to read DnsConfig.
C 6831.232s Main  [ERROR:devtools_http_handler.cc(226)] Cannot start http server for devtools. Stop devtools.
C 6831.232s Main  [ERROR:child_process_launcher_helper_posix.cc(118)] Ignoring invalid file assets/snapshot_blob_64.bin
C 6831.232s Main  [WARNING:simple_synchronous_entry.cc(1102)] Could not open platform files for entry.