Created a CL to disable the test on windows.
https://codereview.chromium.org/2503773002

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/c868c2f37f2ac99fbfe4b5160521fde86225dfe6

commit c868c2f37f2ac99fbfe4b5160521fde86225dfe6
Author: Tsuyoshi Horo <horo@chromium.org>
Date: Tue Nov 15 05:21:38 2016

Disable BrowserFocusTest.FocusOnNavigate on windows

BUG=665296,163931
TBR=warx@chromium.org

Review URL: https://codereview.chromium.org/2503773002 .

Cr-Commit-Position: refs/heads/master@{#432114}

[modify] https://crrev.com/c868c2f37f2ac99fbfe4b5160521fde86225dfe6/chrome/browser/ui/browser_focus_uitest.cc

 Issue 665317  has been merged into this issue.

 Issue 667060  has been merged into this issue.

This test is also flaking on MacOSX. I'm landing a disable CL now.

Example failure: https://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_rel_ng/builds/339210

[ RUN      ] BrowserFocusTest.FocusOnNavigate
[6676:51223:1118/170544:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.KqGfhX/d5ujbdP/Default/History': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[6676:51223:1118/170544:WARNING:mac_util.mm(222)] Failed to set backup exclusion for file '/private/var/folders/9x/6c6sv3cj4j53wzpzthbp4ksm0000gm/T/.org.chromium.Chromium.KqGfhX/d5ujbdP/Default/Favicons': Error Domain=NSOSStatusErrorDomain Code=-50 "The operation couldn?t be completed. (OSStatus error -50.)" (paramErr: error in user parameter list) (-50)
[6679:771:1118/170544:WARNING:vt_video_decode_accelerator_mac.cc(174)] Failed to create VTDecompressionSession: Error Domain=NSOSStatusErrorDomain Code=-8973 "The operation couldn?t be completed. (OSStatus error -8973.)" (codecOpenErr) (-8973)
[6679:771:1118/170544:WARNING:vt_video_decode_accelerator_mac.cc(209)] Failed to create hardware VideoToolbox session
[6679:771:1118/170544:ERROR:vt_video_encode_accelerator_mac.cc(540)]  VTCompressionSessionCreate failed: -12908
[6676:97027:1118/170545:WARNING:simple_synchronous_entry.cc(1055)] Could not open platform files for entry.
../../chrome/browser/ui/browser_focus_uitest.cc:713: Failure
Value of: IsViewFocused(VIEW_ID_OMNIBOX)
  Actual: true
Expected: false
[6676:771:1118/170547:WARNING:url_request_context_getter.cc(43)] URLRequestContextGetter leaking due to no owning thread.
[  FAILED  ] BrowserFocusTest.FocusOnNavigate, where TypeParam =  and GetParam() =  (3071 ms)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ecbf1e11aa1d28dd3e48c2bc7fadeb0214e4a3ab

commit ecbf1e11aa1d28dd3e48c2bc7fadeb0214e4a3ab
Author: tsergeant <tsergeant@chromium.org>
Date: Tue Nov 22 03:40:12 2016

Disable BrowserFocusTest.FocusOnNavigate on Mac

BUG=665296
TBR=warx@chromium.org

Review-Url: https://codereview.chromium.org/2521153003
Cr-Commit-Position: refs/heads/master@{#433777}

[modify] https://crrev.com/ecbf1e11aa1d28dd3e48c2bc7fadeb0214e4a3ab/chrome/browser/ui/browser_focus_uitest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7aa410d501a988161392025b25976de4de3e5405

commit 7aa410d501a988161392025b25976de4de3e5405
Author: Greg Thompson <grt@chromium.org>
Date: Thu Nov 16 21:04:12 2017

Enable BrowserFocusTest.FocusOnNavigate on Windows.

The test harness is less flaky now, so perhaps this can run reliably.

BUG=665296
R=sky@chromium.org

Change-Id: Iae61f9aa6cce8eaa4d99ed2cf7d8794e9dec1094
Reviewed-on: https://chromium-review.googlesource.com/774599
Reviewed-by: Scott Violet <sky@chromium.org>
Commit-Queue: Greg Thompson <grt@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517187}
[modify] https://crrev.com/7aa410d501a988161392025b25976de4de3e5405/chrome/browser/ui/browser_focus_uitest.cc

This is flaking on linux-chromeos-dbg.
https://test-results.appspot.com/dashboards/flakiness_dashboard.html#testType=interactive_ui_tests&tests=BrowserFocusTest.FocusOnNavigate

Flaking since this build:
https://ci.chromium.org/buildbot/chromium.chromiumos/linux-chromeos-dbg/3018

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/4d93ae49b7ec56a1ac010efd4bab32d4ad712ebb

commit 4d93ae49b7ec56a1ac010efd4bab32d4ad712ebb
Author: Kunihiko Sakamoto <ksakamoto@chromium.org>
Date: Thu Dec 07 06:56:23 2017

Disable BrowserFocusTest.FocusOnNavigate on ChromeOS

TBR=warx@chromium.org

Bug: 665296
Change-Id: I69c487f17ce5ee1170fd7f1dc190b2f185e3643f
Reviewed-on: https://chromium-review.googlesource.com/813457
Reviewed-by: Kunihiko Sakamoto <ksakamoto@chromium.org>
Commit-Queue: Kunihiko Sakamoto <ksakamoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#522372}
[modify] https://crrev.com/4d93ae49b7ec56a1ac010efd4bab32d4ad712ebb/chrome/browser/ui/browser_focus_uitest.cc

Probably these are fixed by our cl, Michael?

typo: your

Possibly. There could be a lot of reasons for window focus flakiness, and the deeper I go into the shared and platform-specific activation code, the less I feel capable of reasoning about it ;-)

Also flaky on windows.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/1ca3014d6b21fbe83025eabfb9f0880f061db67c

commit 1ca3014d6b21fbe83025eabfb9f0880f061db67c
Author: Xida Chen <xidachen@chromium.org>
Date: Tue Apr 24 15:01:16 2018

Disable BrowserFocusTest.FocusOnNavigate on Win

TBR=clamy@chromium.org
NOTRY=true

Bug: 665296
Change-Id: I538e83666a06e8e385c79f339f9089f4ee293242
Reviewed-on: https://chromium-review.googlesource.com/1025964
Reviewed-by: Xida Chen <xidachen@chromium.org>
Commit-Queue: Xida Chen <xidachen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553107}
[modify] https://crrev.com/1ca3014d6b21fbe83025eabfb9f0880f061db67c/chrome/browser/ui/browser_focus_uitest.cc

Detected 3 new flakes for test/step "BrowserFocusTest.FocusOnNavigate". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyKwsSBUZsYWtlIiBCcm93c2VyRm9jdXNUZXN0LkZvY3VzT25OYXZpZ2F0ZQw. 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).

Detected 12 new flakes for test/step "BrowserFocusTest.FocusOnNavigate". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyKwsSBUZsYWtlIiBCcm93c2VyRm9jdXNUZXN0LkZvY3VzT25OYXZpZ2F0ZQw. This message was posted automatically by the chromium-try-flakes app.

Detected 14 new flakes for test/step "BrowserFocusTest.FocusOnNavigate". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyKwsSBUZsYWtlIiBCcm93c2VyRm9jdXNUZXN0LkZvY3VzT25OYXZpZ2F0ZQw. This message was posted automatically by the chromium-try-flakes app.

Detected 3 new flakes for test/step "BrowserFocusTest.FocusOnNavigate". To see the actual flakes, please visit https://chromium-try-flakes.appspot.com/all_flake_occurrences?key=ahVzfmNocm9taXVtLXRyeS1mbGFrZXNyKwsSBUZsYWtlIiBCcm93c2VyRm9jdXNUZXN0LkZvY3VzT25OYXZpZ2F0ZQw. 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).

Skipping the test on Windows (as last platform) as well with https://crrev.com/c/1181262.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/958b1b6b16f6e0844b6566898a0cb53780fb3147

commit 958b1b6b16f6e0844b6566898a0cb53780fb3147
Author: Friedrich Horschig <fhorschig@chromium.org>
Date: Mon Aug 20 15:42:13 2018

[Win][Flaky] Disable BrowserFocusTest.FocusOnNaviate on Win

This test is already disabled for all other platforms but (as linked in
the bug) Windows bots also reported flakes. Therefore, disable it for
windows as well.

TBR=clamy@chromium.org

Bug: 665296
Change-Id: I3991d966d72509324c00c28d82ace55d698eecb4
Reviewed-on: https://chromium-review.googlesource.com/1181262
Reviewed-by: Friedrich Horschig <fhorschig@chromium.org>
Commit-Queue: Friedrich Horschig <fhorschig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#584458}
[modify] https://crrev.com/958b1b6b16f6e0844b6566898a0cb53780fb3147/chrome/browser/ui/browser_focus_uitest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/ec52747a5abc25a862843edca761104b3c319764

commit ec52747a5abc25a862843edca761104b3c319764
Author: Gabriel Charette <gab@chromium.org>
Date: Mon Jan 14 16:16:49 2019

[ui_controls] Unflake Send*NotifyWhenDone() on Windows

ui_controls::Send*NotifyWhenDone() can be flaky when invoked after
ui_controls::Send*() as the former can decide to notify based on
observing a yet-to-be-processed event from the latter (or even a
yet-to-be-processed event emitted by unrelated code) and thus notify too
early, resuming and testing conditions that have yet to be met.

Solution: defer the notification if the system queue has pending events
of the same type awaiting dispatch.

Note: mouse move can be repeated indefinitely during a drag, as such we
consider a mouse move complete when it hits the target regardless of
remaining mouse move messages in the queue.

@ BUG OWNERS : This might unflake many currently disabled tests. I've
CC'ed interactive_ui_tests + Windows bugs, please try to re-enable your
test after this CL if you think it might be related.

Bug:  892228 , 640996, 897801,893078,876224,875443,873110,852786,850343,848049,846695,840369,798492,756338,751031,665296,651906,499858,468660,419468,238347,131612,106489,97777,92467
Change-Id: I548856a3948ff71a145435799b4ba3e689561f14
Reviewed-on: https://chromium-review.googlesource.com/c/1392178
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Greg Thompson <grt@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Commit-Queue: Gabriel Charette <gab@chromium.org>
Cr-Commit-Position: refs/heads/master@{#622470}
[modify] https://crrev.com/ec52747a5abc25a862843edca761104b3c319764/chrome/browser/ui/views/bookmarks/bookmark_bar_view_test.cc
[modify] https://crrev.com/ec52747a5abc25a862843edca761104b3c319764/ui/base/test/ui_controls_internal_win.cc