+Fabio, it looks like your CL at https://chromium-review.googlesource.com/c/chromium/src/+/1210165 was identified as the culprit. Can you please take a look at this flake? Thanks!

Reverting in https://chromium-review.googlesource.com/c/chromium/src/+/1242944; we'll see if it applies cleanly.

The revert did not apply cleanly.

On closer examination, it looks like that CL was just renaming the test in question, so the flake was pre-existing (and in fact, the tests around that one were already disabled for flakiness). Will disable the test in question.

Disable is out in https://chromium-review.googlesource.com/c/chromium/src/+/1242945.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/26fb34f4fb8dab02e0e8c951f1d181e29a702c9e

commit 26fb34f4fb8dab02e0e8c951f1d181e29a702c9e
Author: Colin Blundell <blundell@chromium.org>
Date: Tue Sep 25 09:51:15 2018

[Password autofill] Disable flaky test

See  https://crbug.com/887745  for FindIt's (and my) analysis of the
flake.

TBR=vasilii@chromium.org

Bug:  887745 , 849582
Change-Id: I8c6e520679d7462eb759526d14a375ed05f5503f
Reviewed-on: https://chromium-review.googlesource.com/1242945
Reviewed-by: Colin Blundell <blundell@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593881}
[modify] https://crrev.com/26fb34f4fb8dab02e0e8c951f1d181e29a702c9e/chrome/browser/password_manager/password_manager_interactive_uitest.cc

Sorry for the late reply here. blundell@'s diagnosis in c#3 is correct: my CL didn't change any behavior on tests that were already running; it simply stopped running tests for autofill dropdown native views disabled. The flakiness already existed and was surfaced by my CL. Thanks for disabling it, Colin!