Seen to fail here:

https://ci.chromium.org/buildbot/tryserver.chromium.mac/mac_chromium_rel_ng/612072
https://ci.chromium.org/buildbot/tryserver.chromium.mac/mac_chromium_rel_ng/612011
https://ci.chromium.org/buildbot/tryserver.chromium.mac/mac_chromium_rel_ng/611939

When it fails, it fails all 3 retries within the test executable:

[ RUN      ] ScreenCaptureNotificationUICocoaTest.ShortTitle
../../chrome/browser/ui/cocoa/screen_capture_notification_ui_cocoa_unittest.mm:89: Failure
Expected equality of these values:
  460
  NSWidth([[controller() window] frame])
    Which is: 461
[  FAILED  ] ScreenCaptureNotificationUICocoaTest.ShortTitle (11 ms)


Marking P1 since this is causing unnecessary retries on the commit queue. It's blocking CLs that make build changes, causing the entire mac_chromium_rel_ng run to be redone.

Not sure which component is correct for this. Appreciate help re-categorizing.