GitLab

SafeBrowsingPrivateEventRouterFactory::GetForProfile() can return
nullptr, calling methods on nullptr is undefined behavior and causes
some tests in unit_tests to crash under UBSan VPtr.

Fixes
$ ./out/Default/unit_tests --gtest_filter='*ChromeDownloadManagerDelegateTestWithSafeBrowsing*'
under UBSan VPtr

Bug: 1137496
Change-Id: I461f5d1235da4bc98bce22a1d7a4183ed11c4f25
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2568667Reviewed-by: Dominique Fauteux-Chapleau <domfc@chromium.org>
Reviewed-by: Min Qin <qinmin@chromium.org>
Commit-Queue: Arthur Eubanks <aeubanks@google.com>
Cr-Commit-Position: refs/heads/master@{#833160}