GitLab

Nested null callbacks can cause crashes.

Bug: 1090007
Change-Id: I8197cafb9fb74e6471cd83ee0c1619662227acd9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2241122Reviewed-by: Marina Ciocea <marinaciocea@chromium.org>
Commit-Queue: Guido Urdaneta <guidou@chromium.org>
Cr-Commit-Position: refs/heads/master@{#777323}