Fix Visual Studio visualizers for std::map/std::multimap/absl::variant.

Bug: 1406040
Change-Id: Iad4f61a87638b370f0796de57f3e037771af7ca5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4149252
Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Auto-Submit: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: Jesse McKenna <jessemckenna@google.com>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1090912}
NOKEYCHECK=True
GitOrigin-RevId: 5038a60294e705db6b36c550f5459a52150b23ec
1 file changed