tree e75ae6958ad7ea6442f7f7dba8d9194a4dbe195a
parent 9fac7aa22e7cc8e646111632eba61a292543e6d0
author Neil Coronado <nemco@google.com> 1731972985 +0000
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> 1731972985 +0000

[M132][TabStrip][CrashFix] Fix NPE on reorder + DnD

Fix NPE on reorder + DnD.
-Dragging root tab out of group: Moving the first NTP would trigger this crash https://paste.googleplex.com/4834252087885824 as the group title couldn't be found, since its root ID has changed as a result of the action.
-Dragging last tab out of group: Moving the second tab would trigger this crash https://paste.googleplex.com/6657650086641664 as the group title would be deleted, meaning we wouldn't want to trigger an animation on it.

Video: https://screencast.googleplex.com/cast/NTA5NDMwMTAwMzQxNTU1MnwzOWNhNTM5Yy0wNA

(cherry picked from commit f475e9c186028a5d46d3882902b3cc8cbdf40a0c)

Bug: 379706122
Change-Id: Icab951353078df042392d620d12123a91b2c3389
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6019260
Reviewed-by: Sirisha Kavuluru <skavuluru@google.com>
Commit-Queue: Neil Coronado <nemco@google.com>
Code-Coverage: findit-for-me@appspot.gserviceaccount.com <findit-for-me@appspot.gserviceaccount.com>
Cr-Original-Commit-Position: refs/heads/main@{#1383092}
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6033594
Cr-Commit-Position: refs/branch-heads/6834@{#458}
Cr-Branched-From: 47a3549fac11ee8cb7be6606001ede605b302b9f-refs/heads/main@{#1381561}