This is basically the same as  Issue 812769 , yet another way to overlap the notification that you've gone full-screen.

Again, Mac-only. Hmmm... Trent was poking at a possible fix for all of these.

okay assigning to tapted but feel free to dup into  issue 812769  if the same CL fixes them both.

Issue 792876 seems related.

Merging into 812769 - same cause

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3d41e77125f3de8d722b6d8303599abaf2a91667

commit 3d41e77125f3de8d722b6d8303599abaf2a91667
Author: Avi Drissman <avi@chromium.org>
Date: Mon Aug 27 21:18:08 2018

If a dialog is shown, drop fullscreen.

BUG= 875066 ,  817809 , 792876,  812769 ,  813815 
TEST=included

Change-Id: Ic3d697fa3c4b01f5d7fea77391857177ada660db
Reviewed-on: https://chromium-review.googlesource.com/1185208
Reviewed-by: Sidney San Martín <sdy@chromium.org>
Commit-Queue: Avi Drissman <avi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#586418}
[modify] https://crrev.com/3d41e77125f3de8d722b6d8303599abaf2a91667/chrome/browser/ui/browser.cc
[modify] https://crrev.com/3d41e77125f3de8d722b6d8303599abaf2a91667/chrome/browser/ui/browser_browsertest.cc
[modify] https://crrev.com/3d41e77125f3de8d722b6d8303599abaf2a91667/content/browser/web_contents/web_contents_impl.cc
[modify] https://crrev.com/3d41e77125f3de8d722b6d8303599abaf2a91667/content/browser/web_contents/web_contents_impl.h
[modify] https://crrev.com/3d41e77125f3de8d722b6d8303599abaf2a91667/content/browser/web_contents/web_contents_impl_browsertest.cc

This bug has been closed for more than 14 weeks. Removing security view restrictions.

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