GitLab

The test removes the sole profile, waits for the browser removal from
the BrowserList and then expects that the new browser is already added.
This seems not to be always true, since the new profile/browser is
created asynchronously.

This CL modifies ProfileHelperTest.DeleteSoleProfile to wait for
BrowserListObserver::OnBrowserAdded() event before checking that the
BrowserList isn't empty.

Bug: 1008238
Change-Id: Ie7b6a705d7cba5a03e943ed6ec0ab4c3ea08c36a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1863294
Auto-Submit: Alex Ilin <alexilin@chromium.org>
Commit-Queue: Demetrios Papadopoulos <dpapad@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Cr-Commit-Position: refs/heads/master@{#706499}