tree 776aee93eb8e6febe4b50d51062127aba3de22e6
parent 8c0314683af50a42ddee47c2405f1041c5a328ce
author Lily Chen <chlily@chromium.org> 1692842728 +0000
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1692842728 +0000

[DownloadBubble] Clear model when download is deleted

This nulls out the DownloadUIModel member of DownloadBubbleRowView
when the backing download is destroyed. This is to avoid calling into
a deleted DownloadItem and causing a crash.

The specific crash is due to the RepeatingTimer callbacks, but this adds
null checks everywhere the model is expected to be non-null.

Bug: 1470681
Change-Id: Ic3af736f984065f07a03aebb66040f7cad2c980d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4807031
Reviewed-by: Xinghui Lu <xinghuilu@chromium.org>
Commit-Queue: Lily Chen <chlily@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1187622}