DOM: Call FlatTreeParentChanged() on CharacterData nodes
For the atomic move API, https://crrev.com/c/5791021 was introduced to
ensure we only call this API on the direct node that's being moved, and
only on Element nodes. This CL relaxes these conditions, since
https://crrev.com/c/5935350 allows CharacterData nodes to be moved as
well.
Bug: 40150299
Change-Id: I1e74f49db3d86f29d558af15365b8451a60fd040
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5943680
Reviewed-by: Noam Rosenthal nrosenthal@chromium.org
Commit-Queue: Dominic Farolino dom@chromium.org
Cr-Commit-Position: refs/heads/main@{#1371436}