Relevant Log Output:

[ RUN      ] DiceBrowserTest.NoDiceFromWebUI
[6880:5084:0830/200602.409:WARNING:discovery_network_list_win.cc(195)] Failed to open Wlan client handle: 1062
[5680:2900:0830/200602.423:INFO:media_foundation_video_encode_accelerator_win.cc(346)] Windows versions earlier than 8 are not supported.
[6880:6016:0830/200602.423:WARNING:chrome_browser_main_win.cc(645)] Command line too long for RegisterApplicationRestart:  --brave-new-test-launcher --cfi-diag=0 --disable-gpu-process-for-dx12-vulkan-info-collection --gtest_also_run_disabled_tests --gtest_filter=DiceBrowserTest.NoDiceFromWebUI --single_process --test-launcher-bot-mode --test-launcher-output="e:\b\s\w\itgusv3i\scoped_dir1592_21497\results1592_1618\test_results.xml" --test-launcher-summary-output="e:\b\s\w\iotwnves\output.json" --user-data-dir="e:\b\s\w\itgusv3i\scoped_dir1592_21497\d1592_25507" --disable-offline-auto-reload --gaia-url=https://127.0.0.1:57335/ --google-apis-url=https://127.0.0.1:57335/ --lso-url=https://127.0.0.1:57335/ --no-first-run --no-default-browser-check --enable-logging=stderr --disable-default-apps --wm-window-animations-disabled --disable-component-update --test-type=browser --force-color-profile=srgb --disable-zero-browsers-open-for-tests --ipc-connection-timeout=30 --allow-file-access-from-files --dom-automation --log-gpu-control-list-decisions --disable-backgrounding-occluded-windows --disable-gl-drawing-for-tests --override-use-software-gl-for-tests --force-color-profile=srgb --disable-compositor-ukm-for-tests --enable-features=AccountConsistency<scoped_feature_list_trial_name1,TestFeatureForBrowserTest1 --disable-features=NetworkPrediction,SpeculativePreconnect,TestFeatureForBrowserTest2 --disable-gpu-process-for-dx12-vulkan-info-collection --force-fieldtrials=scoped_feature_list_trial_name1/scoped_feature_list_trial_group/ --flag-switches-begin --flag-switches-end --file-url-path-alias="/gen=e:\b\s\w\ir\out\Release\gen" --restore-last-session about:blank
[6880:6016:0830/200602.679:ERROR:input_method_base.cc(146)] NOT IMPLEMENTEDUsing InputMethodKeyboardControllerStub
[6880:6016:0830/200602.815:WARNING:CONSOLE(0)] "HTML Imports is deprecated and will be removed in M73, around March 2019. Please use ES modules instead. See https://www.chromestatus.com/features/5144752345317376 for more details.", source:  (0)
[6880:6016:0830/200602.993:WARNING:CONSOLE(442)] "document.registerElement is deprecated and will be removed in M73, around March 2019. Please use window.customElements.define instead. See https://www.chromestatus.com/features/4642138092470272 for more details.", source: chrome://resources/polymer/v1_0/polymer/polymer-micro-extracted.js (442)
[6880:6016:0830/200603.108:WARNING:CONSOLE(2083)] "Element.createShadowRoot is deprecated and will be removed in M73, around March 2019. Please use Element.attachShadow instead. See https://www.chromestatus.com/features/4507242028072960 for more details.", source: chrome://resources/polymer/v1_0/polymer/polymer-mini-extracted.js (2083)
[6880:4636:0830/200603.283:WARNING:embedded_test_server.cc(238)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:0,load_time_ms:112&json=standard
[6880:6016:0830/200603.285:WARNING:gaia_auth_fetcher.cc(998)] ClientLogin failed with
[6880:6016:0830/200603.285:WARNING:gaia_auth_fetcher.cc(1021)] Incomprehensible response from Google Accounts servers.
[6880:4636:0830/200604.353:WARNING:embedded_test_server.cc(238)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:1,load_time_ms:1769&json=standard
[6880:6016:0830/200604.354:WARNING:gaia_auth_fetcher.cc(998)] ClientLogin failed with
[6880:6016:0830/200604.354:WARNING:gaia_auth_fetcher.cc(1021)] Incomprehensible response from Google Accounts servers.
[6880:4636:0830/200606.913:WARNING:embedded_test_server.cc(238)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:2,load_time_ms:4451&json=standard
[6880:6016:0830/200606.915:WARNING:gaia_auth_fetcher.cc(998)] ClientLogin failed with
[6880:6016:0830/200606.915:WARNING:gaia_auth_fetcher.cc(1021)] Incomprehensible response from Google Accounts servers.
[6880:4636:0830/200615.397:WARNING:embedded_test_server.cc(238)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:3,load_time_ms:12990&json=standard
[6880:6016:0830/200615.401:WARNING:gaia_auth_fetcher.cc(998)] ClientLogin failed with
[6880:6016:0830/200615.401:WARNING:gaia_auth_fetcher.cc(1021)] Incomprehensible response from Google Accounts servers.


As these flakes are rare (e.g. no visible flakes on the Flakiness Dashboard [1]), I'm not disabling this test.

Assigning to droger@ to further investigate.

[1] https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=browser_tests%20(with%20patch)&tests=DiceBrowserTest.NoDiceFromWebUI

What was the actual failure? Was it a timeout?

Ah sorry, there was a link to the failure in the original report, and I could see that this is indeed a timeout.

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Detected 3 new flakes for test/step "DiceBrowserTest.NoDiceFromWebUI". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyKgsSBUZsYWtlIh9EaWNlQnJvd3NlclRlc3QuTm9EaWNlRnJvbVdlYlVJDA. This message was posted automatically by the chromium-try-flakes app. Since flakiness is ongoing, the issue was moved back into Sheriff Bug Queue (unless already there).

Taking off the queue. Hasn't been a flake in ~5 days.

Multiple recent failures:

Win7 Tests (1)
- https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20Tests%20%281%29/84175
- https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20Tests%20%281%29/84165

Log:
 DiceBrowserTest.NoDiceFromWebUI
  [1076:6960:1001/055435.124:WARNING:discovery_network_list_win.cc(195)] Failed to open Wlan client handle: 1062
  [1076:2208:1001/055435.124:WARNING:chrome_browser_main_win.cc(647)] Command line too long for RegisterApplicationRestart:  --brave-new-test-launcher --cfi-diag=0 --disable-gpu-process-for-dx12-vulkan-info-collection --gtest_also_run_disabled_tests --gtest_filter=DiceBrowserTest.NoDiceFromWebUI --single_process --test-launcher-bot-mode --test-launcher-output="e:\b\swarm_slave\w\itxy1cbi\scoped_dir4080_28976\results4080_4292\test_results.xml" --test-launcher-summary-output="e:\b\swarm_slave\w\iosy0_hp\output.json" --user-data-dir="e:\b\swarm_slave\w\itxy1cbi\scoped_dir4080_28976\d4080_3747" --disable-offline-auto-reload --gaia-url=https://127.0.0.1:61316/ --google-apis-url=https://127.0.0.1:61316/ --lso-url=https://127.0.0.1:61316/ --no-first-run --no-default-browser-check --enable-logging=stderr --disable-default-apps --wm-window-animations-disabled --disable-component-update --test-type=browser --force-color-profile=srgb --disable-zero-browsers-open-for-tests --browser-test --ipc-connection-timeout=30 --allow-file-access-from-files --dom-automation --log-gpu-control-list-decisions --disable-backgrounding-occluded-windows --disable-gl-drawing-for-tests --override-use-software-gl-for-tests --force-color-profile=srgb --disable-compositor-ukm-for-tests --enable-features=AccountConsistency<scoped_feature_list_trial_name1,TestFeatureForBrowserTest1 --disable-features=TestFeatureForBrowserTest2 --disable-gpu-process-for-dx12-vulkan-info-collection --force-fieldtrials=scoped_feature_list_trial_name1/scoped_feature_list_trial_group/ --flag-switches-begin --flag-switches-end --file-url-path-alias="/gen=e:\b\swarm_slave\w\ir\out\Release\gen" --restore-last-session about:blank
  [1076:2208:1001/055435.834:WARNING:CONSOLE(0)] "HTML Imports is deprecated and will be removed in M73, around March 2019. Please use ES modules instead. See https://www.chromestatus.com/features/5144752345317376 for more details.", source:  (0)
  [1076:2208:1001/055435.892:WARNING:CONSOLE(442)] "document.registerElement is deprecated and will be removed in M73, around March 2019. Please use window.customElements.define instead. See https://www.chromestatus.com/features/4642138092470272 for more details.", source: chrome://resources/polymer/v1_0/polymer/polymer-micro-extracted.js (442)
  [1076:2208:1001/055436.045:WARNING:CONSOLE(2083)] "Element.createShadowRoot is deprecated and will be removed in M73, around March 2019. Please use Element.attachShadow instead. See https://www.chromestatus.com/features/4507242028072960 for more details.", source: chrome://resources/polymer/v1_0/polymer/polymer-mini-extracted.js (2083)
  [1076:2500:1001/055436.204:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:0,load_time_ms:109&json=standard
  [1076:2500:1001/055437.146:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:1,load_time_ms:1949&json=standard
  [1076:2500:1001/055439.918:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:2,load_time_ms:4813&json=standard
  [1076:2500:1001/055447.672:WARNING:embedded_test_server.cc(239)] Request not handled. Returning 404: /ListAccounts?gpsia=1&source=durations_metrics,counter:3,load_time_ms:12557&json=standard

Disabling test: https://chromium-review.googlesource.com/c/chromium/src/+/1254562

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/f00ca5b6a3177630eb7e3de19ed9d029ec635ed6

commit f00ca5b6a3177630eb7e3de19ed9d029ec635ed6
Author: Francois Doray <fdoray@chromium.org>
Date: Mon Oct 01 16:27:52 2018

Disable DiceBrowserTest.NoDiceFromWebUI.

Multiple recent failures:

Win7 Tests (1)
- https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20Tests%20%281%29/84175
- https://ci.chromium.org/p/chromium/builders/luci.chromium.ci/Win7%20Tests%20%281%29/84165

See failure log on the bug.

TBR=droger@chromium.org

Bug: 879443
Change-Id: Id3300df55adc2336c338cfeb0a3fd8c8e75d51b9
Reviewed-on: https://chromium-review.googlesource.com/1254562
Reviewed-by: François Doray <fdoray@chromium.org>
Commit-Queue: François Doray <fdoray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595463}
[modify] https://crrev.com/f00ca5b6a3177630eb7e3de19ed9d029ec635ed6/chrome/browser/signin/dice_browsertest.cc

 Issue 875853  has been merged into this issue.

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